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1970年4月24日,我国成功地用自行研制的长征1号运载火箭发射了第一颗人造地球卫星,使我国成为继苏、美、法、日之后第五个用自制火箭发射自制人造卫星的国家。卫星的重量比前4个国家发射的首颗人造卫星重量之和还多。这表明,当时我国的运载火箭已达到了一定的水平。 至今,我国已经发射成功的长征系列火箭有14种,完
On April 24, 1970, China successfully launched its first artificial Earth satellite with its self-developed launch vehicle No. 1 on the Long March No. 1, making our country the fifth one to launch a homemade orbiting satellite with a homemade rocket after the establishment of the Soviet Union, the United States, France and Japan s country. The weight of the satellites is more than the sum of the weights of the first satellites launched by the first four countries. This shows that at that time our country’s launch vehicle had reached a certain level. So far, 14 types of Long March series rockets have been launched successfully in our country