More encirclement and suppression, more breakthrough! China has made breakthroughs in more than ten major scientific and technological fields

Looking back to 2020, the United States will impose more severe sanctions and blockades on China in high-tech and high-end manufacturing industries, and more than 300 Chinese institutions, universities and enterprises will be punished by the United States, focusing on China’s core enterprises, key technologies and major projects. < / P > < p > in the face of such a complex and changeable environment, what happened to China’s high-tech and high-end manufacturing industry? Facts have proved that China has not only not been beaten down, but also won many “world first”. The central economic work conference, which ended on December 18, deployed the key economic work in 2021 and identified eight key tasks for next year, among which “strengthening the national strategic science and technology force” ranked first. < / P > < p > Xiao Youdan, a researcher at the Institute of science and technology strategy consulting, Chinese Academy of Sciences, believes that this fully shows the profound and complex changes in the current domestic and international environment, and China’s economic development puts forward more urgent requirements for scientific and technological innovation. It reflects the strategic judgment that “China’s economic and social development and improvement of people’s livelihood need more scientific and technological solutions than ever before, and that innovation is the first driving force.”. < p > < p > on January 11, the “China Tianyan” 500 meter spherical radio telescope passed the national acceptance and officially opened for operation. It is the largest and most sensitive radio telescope in the world. On January 12, Nanchang, the first destroyer of China’s self-developed 055 10000 DWT destroyer, was listed, making a leap from the third generation to the fourth generation of Chinese Navy destroyers. On July 26, the large-scale amphibious aircraft “Kunlong” ag600 made its first flight at sea, which is the third first flight after the first flight on land and on water. Since then, the development process has entered a new stage. On July 31, the beidou-3 global satellite navigation system was fully completed and put into service, making China the third country in the world to have an independent global satellite navigation system. < / P > < p > on November 10, the “striver” manned submersible successfully sat at the bottom of the Mariana Trench, with a depth of 10909m, setting a new record for China’s manned deep diving. On November 27, China’s independent third-generation nuclear power “hualong-1” issued its first power, marking China’s official entry into the ranks of advanced nuclear power technology countries. < p > < p > also on December 4, a new generation of “artificial sun” device, China circulator no.2m, was built, laying a solid foundation for the independent design and construction of China’s nuclear fusion reactor. At 1:59 a.m. on December 17, the chang’e-5 lunar exploration project successfully landed, marking the successful completion of China’s first extraterrestrial object sampling and return mission. In one mission, the chang’e-5 spacecraft has made several major breakthroughs, including the first lunar sampling, lunar take-off, lunar orbit rendezvous and docking, and return with samples. < / P > < p > “80% of our lives are related to location and time. Just like water and air, modern people’s lives can’t be separated from navigation.” After beidou-3 was officially launched, the reporter had an exclusive interview with Lin Baojun, the chief designer of beidou-3 satellite system and known as “Beidou maniac”. < p > < p > according to Lin Baojun, 70% of the chips of smart phones in China now support GPS and Beidou at the same time. Many people can’t perceive the Beidou system because mobile phone manufacturers and map software manufacturers often use “GPS” to replace all satellite navigation systems. People are also used to saying “turn on GPS navigation”. < / P > < p > now there are four major satellite navigation systems in the world, namely the global positioning system of the United States, the GLONASS Positioning System of Russia, the Galileo satellite positioning system of Europe and the Beidou satellite navigation system of China. < p > < p > ran Chengqi, director of China satellite navigation system management office and spokesman of Beidou satellite navigation system, said, “beidou-3 is a powerful global satellite navigation system with world-class functional performance indicators.” < / P > < p > behind the world-class positioning is excellent strength. According to Lin Baojun, “in addition to the positioning functions of the other three navigation systems, beidou-3 also provides” 1 + 6 “characteristic services, namely global short message, regional short message, satellite based enhancement, ground-based enhancement, search and rescue service and precise single point positioning.” Performance is also “I have no one, I have excellent people.”. < / P > < p > according to Russian media reports, after the completion of the construction, China’s Beidou won three “world first” in one breath, namely, the number of satellites in the world, the number of patent applications in the world and the speed of satellite networking in the world. < / P > < p > “no longer looking at people’s faces” is the most important significance of Beidou’s global service. In addition to giving more choices to China and the world, the autonomous control of the Beidou system itself is also crucial. < / P > < p > “GPS has been developed for decades, especially the good frequency resources and orbit have been occupied by it, and more importantly, the relevant patents have been occupied by it. According to my words, we have to survive in the cracks, which is the difficulty of the latecomers. The Chinese have never done this technology before. It was hard for us at that time. ” Lin Baojun said. < / P > < p > is a tribute. Although the average age of the 81 member first launch satellite team led by Lin Baojun is only 31 years old, they successfully completed the deployment task of 12 networking satellites of beidou-3 in three years and three months, realizing the leap that the United States can only complete in 20 years from GPS-2 to GPS-3. < / P > < p > on October 15, China Academy of information and communication released Beidou high precision positioning service platform version 2.0, which can realize second level positioning and improve positioning accuracy to 1.2m, and even reach sub meter level when assembling vehicle antenna. This means that “Lane level” positioning can be realized. < / P > < p > at present, domestic Beidou basic products have been exported to more than 120 countries and regions, and Beidou based applications such as land ownership confirmation, precision agriculture, digital construction and smart port have been successfully implemented in ASEAN, South Asia, Eastern Europe, West Asia and Africa. < p > < p > at 1:59 a.m. Beijing time on December 17, the chang’e-5 spacecraft returned to earth with lunar soil at a speed close to the second universe, opened its parachute at an altitude of 10km from the earth’s surface, and landed at the landing site of Siziwang Banner, Inner Mongolia, according to the predetermined plan. It marks a complete victory in the three-step closing battle of China’s lunar exploration project. At the press conference of the state information office on the afternoon of December 17, Wu Yanhua, deputy director general of the National Space Administration and deputy commander in chief of the lunar exploration project, said that the chang’e-5 mission has created five “China’s first” missions: first, sampling and packaging of extraterrestrial objects; second, ignition takeoff and precise orbit entry of extraterrestrial objects; third, unmanned rendezvous and docking and sample transfer of lunar orbit; and fourth, carrying spacecraft The fifth is to establish the storage, analysis and research system of Chinese lunar samples. < / P > < p > “the successful implementation of this mission is a new milestone in the development of China’s space industry.” Wu Yanhua said that it marks that China has the ability to go back and forth between the earth and the moon, laying a solid foundation for China’s future lunar and planetary exploration. At present, the fourth phase of China’s lunar exploration project and the planetary exploration project will continue to be implemented with the successful chang’e-5 mission as the starting point. At present, tianwen-1, the first Mars exploration mission, is on its way to Mars. Chang’e-6, chang’e-7, chang’e-8, asteroid exploration, Mars sampling and return, and Jupiter system exploration will also be carried out as planned. < / P > < p > in fact, in order to prepare for this 23 day trip to the moon, the development team of chang’e-5 has been with chang’e-5 for 10 years. < / P > < p > “it’s been 10 years since the project was established in January 2011. It’s not easy to return in December according to our plan. It’s not easy.” Ye Peidao, chief scientist of Chinese Academy of space exploration, and chief scientist of Chinese Academy of space science. Shi Wei, assistant to the commander in chief of chang’e-5 detector, said, “the whole test team has done nearly 500 tests in all aspects of sampling and packaging, so we can feel at ease if we comprehensively check the performance of the products.” < p > < p > PENG Jing, deputy chief designer of chang’e-5 spacecraft system, stressed that “unmanned rendezvous and docking in lunar orbit is very difficult. From the history of lunar exploration, only Apollo manned lunar landing has ever performed rendezvous and docking in lunar orbit, but this unmanned rendezvous and docking has never happened before.” For the purpose of lunar samples, Wu Yanhua said that China is the third country to sample from the moon. Lunar samples mainly include three types of uses, the main purpose of which is for scientific research; some samples will be displayed to the public in the National Museum of Tibet for popular science education; the third type will publish lunar samples and data management methods according to international cooperation conventions and multilateral bilateral cooperation agreements for sharing with scientists from all over the world. Continue ReadingVideo Number assistant internal test online! Four functions let you send 1g video on the computer