Zhiji L7 Angel Wheel will be delivered in the first quarter of next year at the earliest, and the interior of Zhiji L7 will be officially made public at the upcoming Guangzhou Auto Show. This new electric luxury brand, which was established only one year ago, is accelerating its way to people with a speed that exceeds that of any previous car companies.

This time, we got a close look at the excellent performance of Zhiji L7. Although it is still an engineering vehicle, the mechanical hardware and adjustment of the vehicle have been locked. In a word, it is a product with performance comparable to that of a million-level high-end luxury car, and it is the most fun car in the history of SAIC.

In a test field, the ground was printed with black marks left by the friction between the tire and the ground after drifting in circles. A senior technician said that this is the first time that a performance car has left its mark since the test site was put into use, and this mark was left by Zhiji L7.

What kind of performance car has Zhiji built? The authoritative data measured by this group of national motor vehicle product quality inspection and testing centers can make you better understand.

The acceleration of 3.87 seconds, the braking performance of 32.69 meters and the steady-state maximum lateral acceleration of 0.968G can be seen in the video at the beginning of the article.

In addition to the official measured data, there are also excellent performance, such as more than 10 consecutive full-power ejection starts, 50: 50 front and rear car body weight ratio, 0-100% real-time dynamic intelligent adjustment of front and rear axle torque, 100% kinetic energy recovery efficiency and 10.8m turning diameter. Any one of these achievements is worth talking about a lot, and the space problem is only briefly discussed from two hardware modules: motor and brake.

Heat dissipation is a systematic project for electric drive, and it is also one of the most difficult problems to solve. At present, the common practices in the industry are oil cooling heat dissipation, flat wire winding and motor thermal management system. Zhiji L7 has brought in a "Ao Bai" family bucket, and collected these mainstream schemes.

Compared with Tesla’s winding end oil cooling scheme, Zhiji L7′ s straight waterfall oil cooling structure can cool the winding end and core at the same time, which improves the sustainability by 46% compared with the current mainstream water cooling scheme. This innovative motor cooling structure has been applied for an international patent.

In addition, this motor also uses 8 layers of Hair-pin flat wire winding, which is simply to change the original round winding wire into a winding wire with a flat rectangular cross section. This has many advantages, for example, lines can be closely attached to each other, which improves the slot full rate and brings about the improvement of the overall power density of the motor. It can be understood that in the same refrigerator, you must pack more Wangzai milk in square cartons than in round cans, so that your refrigerator utilization rate will be higher.

For heat dissipation, the larger the cross-sectional area of the flat wire in the same space, the smaller the resistance, and the less the heat generated. In addition, the flat wire has a larger heat dissipation contact surface, which can achieve excellent heat dissipation effect with oil cooling. This is easier to understand, and your cooking is also cut into squares as much as possible, rather than columns, because the contact area is larger, which is conducive to heat conduction.

In addition to the hardware, Zhiji L7′ s motor cooling is also equipped with a thermal management system, which intelligently controls the electronic oil pump through algorithms, and sprays wherever it is too hot. Because the local temperature of the motor will be different under different working conditions, with the algorithm blessing, the heat dissipation can be done more accurately.

Why does Zhiji L7 have to work hard to maximize heat dissipation? Because Zhiji wants too much, he wants small size, high power, good performance, good HVH and low energy consumption.

Fortunately, although the design requirements are harsh, the engineers still meet them one by one. The high-efficiency and high-power permanent magnet synchronous motor mounted on the rear axle of Zhiji L7 solves the heat dissipation problem, achieves the same high performance as asynchronous induction motor, and gives full play to the advantages of small size, good NVH and low energy consumption of permanent magnet synchronous motor.

Thanks to this design, Zhiji L7 can not only achieve dual-motor four-wheel drive, but also break 100 in 3.87 seconds. It can also keep the front of the car in a low posture, and achieve an ultra-low drag coefficient of 0.21Cd. At the same time, with the mute design, the mute level is 3~6dB ahead of the industry.

The braking distance of 32.69 meters is largely due to the customized bembo braking system, including high-performance four-piston all-aluminum calipers and customized large-size high-performance brake discs. Many models only use brembo’s calipers and don’t buy brake discs. They also use brembo to support the scene, and there is little "Ao Bai" like Zhiji L7.

The size of the high-performance ventilation disc of Zhiji L7 is 365mm before and 356mm after, which has reached the level of a million-class performance vehicle. The larger braking friction area can bring better braking response and extremely low thermal attenuation.

In addition to performance, Zhiji L7 also gives consideration to energy efficiency. Zhiji L7 also uses the Onebox fully decoupled brake control system provided by Continental. At present, the mainstream scheme on the market is Twobox system, and the mechanical braking and regenerative braking can’t be decoupled. The intuitive feeling is that when the assisted driving is enabled, the ACC system controls the acceleration and deceleration, and your brake pedal will follow. If the AEB system is enabled, it just happens that your foot is under the brake pedal, and you will probably go to the hospital to hang the orthopedics.

The influence of Twobox system on energy consumption lies in that when you step on the brake, mechanical braking will definitely step in and consume part of kinetic energy, while the rest will flow into the kinetic energy recovery system, and the recovery efficiency is only 60%-70%. Onebox fully decoupled braking control system, when stepping on the brake, can completely rely on kinetic energy recovery to achieve deceleration when the deceleration is less than 0.3 g, and the mechanical braking part will only intervene when it exceeds 0.3 g, so that 100% kinetic energy can be recovered, and it can be called Lu Hua peanut oil-squeezing expert in kinetic energy recovery field. In addition, the Onebox fully decoupled brake control system can realize more flexible adjustment of the brake pedal and provide redundant braking for high-level intelligent driving.

As said in the video, Zhiji L7 reveals an ultimate pursuit of perfection, which is very difficult for such a complex product as intelligent electric vehicle.

The high-level assisted driving realized by the large computing chip and lidar, the liftable screen and 22 speakers create an intelligent cockpit with the ultimate sense of science and technology, and the driving performance that can be rushed out, braked firmly and manipulated flexibly. Zhiji’s pursuit for the ultimate is far more than that.

The paranoid pursuit of perfect quality can promote the perfect integration of scientific and technological progress and user experience. Perfection is difficult, but we can see that Zhizhi is already on the way to perfection.

　　CCTV News:Researchers announced on the 3rd that two serious security vulnerabilities have been found in computer chips, involving a large number of computers and smart phones around the world, which may be the most influential security vulnerability in computer history.

　　A large number of computers and smart devices or "strokes"

Image source network

　　Google announced on the 3rd US time that its team and technicians from many countries have jointly discovered two chip-level security vulnerabilities, through which hackers can illegally read system memory and steal key information such as passwords. One of the vulnerabilities involves almost all CPU chips produced by Intel in recent years, and the other vulnerability affects chips produced by Intel, AMD, a semiconductor company of Chaowei, and ARM Technologies, UK. That is to say, almost all desktop computers, notebook computers and Internet servers using Intel’s CPU, as well as computers, smart phones, tablets and other intelligent devices using chips from Intel, AMD, and ARM Technologies, may be recruited.

　　Major manufacturers have introduced security patches one after another.

　　However, the researchers said that they had discovered these two vulnerabilities in the middle of last year and informed major manufacturers. Over the past six months, various companies have been making security patches to fix these two vulnerabilities. At present, both Microsoft and Apple have prepared security patches for their desktop computer operating systems, and Google also said that smartphones using the latest version of Android operating system are also safe. It is not clear whether Apple’s iphone and ipad tablets are also affected by these two security vulnerabilities.

　　No sign of vulnerability being exploited by hackers has been found yet.

　　The BBC quoted the British network security agency as saying that users don’t have to worry too much. So far, there are no signs that these two vulnerabilities have been obtained and exploited by hackers, so it is only necessary to update the security patches of major manufacturers in time. However, some media also said that security patches may slow down the system, and the degree of slowdown may be between 5% and 30%. Intel denied this statement.

　　Core reading

　　On January 21st, the results of the second batch of centralized drug procurement organized by the state were released, and 32 varieties were successfully purchased, with an average price drop of 53% and the highest drop of 93%. Many drugs selected this time are commonly used by ordinary people, involving diabetes, hypertension, colds and fever, etc., and more patients will benefit.

　　The commonly used drugs such as Baitangping for diabetics, indapamide tablets for hypertensive patients and acetaminophen for colds and fever have been reduced by more than half!

　　On January 17th, under the guidance of the National Medical Insurance Bureau and other departments, all provinces (autonomous regions and municipalities) and Xinjiang Production and Construction Corps formed a procurement alliance, and the second batch of centralized procurement of drugs organized by the state was carried out in Shanghai, resulting in the result of quasi-winning. 32 varieties were successfully purchased, and compared with the lowest purchase price in the alliance area in 2018, the average selected price decreased by 53%. On January 21st, the result of the election was officially released.

　　The highest drop in drug prices reached 93%

　　Of the 33 varieties collected this time, 32 were successfully purchased, and a total of 100 products were selected. 122 enterprises participated, resulting in 77 enterprises to be selected. Compared with the lowest purchase price in the alliance area in 2018, the proposed bid price dropped by an average of 53%, with the highest drop reaching 93%.

　　After this round of centralized collection, it means that there are more commonly used drugs to reduce prices, that is, 25 drugs selected before, and 32 varieties this time. The 32 varieties contain many drugs that people are familiar with, such as acetaminophen, antibiotics amoxicillin, clindamycin hydrochloride, azithromycin and cefradine, acarbose and glimepiride for diabetes, metronidazole tablets for toothache, indapamide tablets for hypertension and bisoprolol fumarate. The price reduction of these commonly used drugs will benefit more patients. For example, Bayer Acarbose Tablets (50mg30 tablets), the original drug, with the trade name of Baitangping, is used in a very large amount among Chinese diabetics. This quotation is 0.18 yuan per piece, with a drop of more than 90%.

　　On the 17th, 122 of the 33 enterprises preparing to purchase varieties declared their prices, including the original research drugs and generic drugs that passed the consistency evaluation. Four original drugs were significantly reduced in price, and they were successfully shortlisted for the selected results.

　　This centralized procurement is still the general idea of "national organization, alliance procurement and platform operation", adhering to the principles of purchasing with quantity, integrating recruitment and procurement, and ensuring use, and taking conformity evaluation as the condition for the shortlisting of generic drugs. Medical institutions and retail pharmacies designated by medical insurance can participate voluntarily.

　　"The second batch of state-organized centralized purchasing manufacturers can be multiple, up to six, maintaining moderate competitiveness. According to the number of selected manufacturers, the dosage is agreed to be 50% to 80% respectively. At the same time, maintain a reasonable price gap between different selected enterprises for the same drug. Among the short-listed manufacturers to be selected, the lowest quotation is given priority to two regions to ensure the dosage and protect the enthusiasm of enterprises. " Ding Jinxi, a professor at China Pharmaceutical University said.

　　In the next step, all localities will focus on the implementation of the selected results, and patients are expected to use the selected drugs from April this year.

　　Guaranteed dosage of low-priced drugs

　　In the "4+7" pilot project, the original drug appeared "patent cliff" for the first time, and the price was greatly reduced. This collection was not unexpected. For example, the price of acarbose, Bayer’s diabetes drug, was reduced by more than 90%, and meloxicam tablets, Boehringer Ingerham’s drug for rheumatoid arthritis, was reduced by more than 80%.

　　However, some drugs that were originally low-priced in history have returned to low-priced positions in this collection, and the dosage has been guaranteed to ensure a stable supply. For example, acetaminophen is 0.03 yuan per tablet, metronidazole is 0.05 yuan per tablet, and amoxicillin is 0.05 yuan per tablet.

　　These prices are just a few cents, but they are not generally used by people. This is because for the convenience of bidding, enterprises quote in the smallest unit of preparation (tablets, granules, sticks and bags), while in real life, people pack drugs in boxes, bottles and other units. For example, the centralized purchase of acarbose from an enterprise, the proposed bid price of 0.18 yuan is the price of each tablet, while patients buy it in boxes, and the converted price is 5.42 yuan per box.

　　So, are these prices higher or lower than international prices?

　　Guangdong dongyangguang pharmaceutical co., ltd, in this centralized procurement, three products were shortlisted, and two products were ranked first, which was the lowest among the prices to be selected for this variety. Two products to be selected are moxifloxacin hydrochloride and olmesartan medoxomil, which were originally sold abroad and just listed in China. Among them, the proposed bid price of moxifloxacin hydrochloride is 6.66 yuan.

　　According to Chen Yangui, the executive director of the company, the centralized purchasing organized by the state has made the market return to rationality. The company has strong technical force and strong supply chain, and it has great advantages to return to the domestic market, so it participated in the second batch of centralized purchasing. "The quotation for the shortlisted qualification is similar to that in the European and American markets."

　　Inquire about the price of moxifloxacin hydrochloride of the same specification abroad, and the public price is RMB 8 yuan and 9 yuan. Feng Chang, a professor at China Pharmaceutical University, explained that the actual settlement price is often lower than the public price, and China has a large market share, so there is not much difference between the two. "Enterprise quotation has its own development strategy considerations, which are normal market behaviors."

　　Some experts estimate that in the past, the price of generic drugs in China was more than twice the international price. After purchasing with quantity, it returned to the international normal price. Expert research has found that the part that is higher than the reasonable price occurs in the intermediate link, which is not included in the quality links such as production and research and development. Squeezing out this part of water will not affect the quality of drugs, nor will it affect the development of enterprises.

　　An original research drug of Boehringer Ingerham, which has been on the market for more than 20 years, entered the scope of the proposed selection this time. The drug has already passed the patent period. Although the price has been reduced by 80%, the company originally sold it mainly in Shanghai, Beijing and some provincial capitals. After entering centralized purchasing this time, the sales market has expanded to half of China. "We actively participate in and cooperate with China’s national policies." Zeng Chenghui, head of the company’s regional expansion business department, said.

　　The person in charge of the National Pilot Office and the Joint Procurement Office believes that the main reasons for the sharp price reduction of selected drugs are as follows: the state organizes centralized procurement and use of drugs, which truly realizes the integration of procurement with quantity and recruitment, and gives clear expectations to pharmaceutical manufacturers, which is conducive to their independent quotation and declaration according to the purchase volume, squeezing out unreasonable virtual space; Further improve the procurement rules, and realize the function of market price discovery through open and sunny competition; Timely settlement of payment for goods significantly reduces the capital cost of enterprises and leaves room for price reduction.

　　By purchasing with quantity and ensuring the use, enterprises no longer need to carry out sales public relations, "a batch of low-priced drugs ‘ Resurrection ’ It is also a return to international practice. " The person in charge said.

　　The burden on patients is significantly reduced.

　　According to the person in charge of joint procurement, the "4+7" pilot project and expansion are progressing smoothly.

　　The implementation of procurement in pilot cities exceeded expectations and the agreed procurement volume was completed ahead of schedule. By the end of December 2019, the average procurement progress of 25 "4+7" pilot areas for selected drugs was 183%, and the selected drugs accounted for 78% of the purchases of drugs with the same generic name. All the expanded areas have started to implement the results of the expanded procurement in December, and patients all over the country have used the drugs selected by centralized procurement with high quality and low price.

　　Due to the sharp drop in prices, the burden on patients has been significantly reduced. In addition, judging from the situation in the "4+7" pilot areas, the proportion of people using generic drugs and original drugs that have passed the consistency evaluation has greatly increased from about 50% to over 90%, which has significantly improved the quality level of people’s drug use.

　　Chen Qiulin, director of the Social Security Research Office of the Institute of Population and Labor Economics of China Academy of Social Sciences, said that the centralized drug procurement organized by the state is different from the previous recruitment, and it is beneficial to patients, doctors, enterprises, medical insurance funds and other parties, forming a benign mechanism. "Centralized procurement based on the consistent evaluation of quality and efficacy has prompted enterprises to return to cost and quality competition and fundamentally improved the ecological environment of the pharmaceutical industry. At the same time, it becomes a push ‘ Three medical linkage ’ The important entry point, policy connectivity and synergy, play a superposition effect. "

　　The person in charge of the pilot office said that the next step will be to establish a normalized and standardized centralized procurement system based on the improvement of the "4+7" pilot and expansion and the experience of the second batch of countries in organizing centralized procurement and use of drugs, and to include more products in centralized procurement. "Let the new procurement model, marketing method and industry ecology become the leading forces."

　　According to Ding Yilei, deputy director of the Price and Procurement Department of the National Medical Insurance Bureau, the scope of centralized procurement was fully covered, and the varieties with sufficient competition and stable supply were selected for one tender and national implementation, and the rules were further improved. "In the future, according to the practice of this round of centralized procurement, the centralized procurement of drugs organized by the state will be normalized, and qualified varieties will be included in the scope of centralized procurement." (Our reporter Li Hongmei.)

Every legend will fade over time

Some people say that beauty is an art, not just wearing it. They are daring to act as the first person for their fashion forefronts.

Just as the "non -mainstream" and "killing Matt" pursued by the post -90s, the "Curry", "JK uniform", "Hanfu culture" pursued after 00s and so on.

From the perspective of the 90s today, the original avant -garde thought was just a legend, which had faded, and only had some naive and ridiculous memories. Those who were once considered to be mature are just alternatives in the eyes of adults. One day, maybe these post -00 children should also think the same as us.

Some people say that today’s beauty has been subtly involved, the avant -garde thought, and the "deformity" born in the times, they gradually changed the definition of beauty, no longer the innocence and natural beauty of the 70.80s, but the individuality and thoughts pursued by young people’s pursuit Open, they put the definition of "beauty" on exposed wearing, personalities, charming perfumes and luxurious decorations.

In the past, "beauty" was wore for yourself, and the current "deformity beauty" was appreciated by others. Although there were different praises, they didn’t care about this, just as the words on the Internet: "Take your own way, let others let others have others, let others make others others, let others make others others Isn’t it true of us in the past? We ca n’t appreciate others at all, and only we will appreciate it ourselves.

Women of the subway station are cool, and the "pattern" on the back becomes the focus

Some netizens published a scene located in the Shanghai Metro Station. A young and fashionable woman walked in the subway station in a cool and fashionable woman, which attracted the attention of many passers -by.

She wore a short vest on her body, and the whole back was basically in the air. It seemed that this was her real "clothes" with the entire pattern. I can’t help but want to ask if people who have tattoos like to wear clothes like this, whether men and women.

This pattern is not expected to be the focus of everyone’s appreciation. The pattern is covered with the entire back. Only a small part is blocked by the clothes behind. It is obvious that the pattern of a woman dancing at the face is obviously seen.

Her lower body is a black shorts, with two short clothes on the calf part, which should be connected with pants, but she unlocked the connected buttons to form such a shape. Essence

Her arms are two sleeves, like pants, and cut off, but this is not connected to the vest of the top.

If it is hot, wearing cool feelings, but she wears shoes, short clothes and sleeves of the arms, which really makes people really understand whether she is afraid of heat or cold.

Perhaps in her opinion, she just dedicated her to the art of behavior, not to wear warmth or cool clothes. She didn’t care about the gaze of others, and she was more self -confidence.

Indeed, she successfully attracted the attention of passers -by, and many people obviously had passed, and she couldn’t help but look back.

It may be that everyone’s circle is different, different thoughts, and behavior is different. Some women have a soft spot for their own feelings. They think this is an art, fashionable art.

Anyway, the times are developing rapidly today, and thoughts will change with this. Blind traditional thoughts are not a good thing. In this era, some avant -garde people need to open the way for us. Appreciation, this is not a unique beauty.