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五 1970年4月24日,长征一号火箭成功地把首颗卫星东方红一号送上太空,标志着我国成为继苏、美、法、日之后第五个能够发射卫星的国家。这颗卫星重量为173公斤,比前4个国家发射的第一颗卫星重量之和还要大,说明我国卫星事业和运载火箭起步较高。当时国际权威人士就认为:“中国把卫星射入地球轨道,从而显示出中国掌握了先进的火箭技术和制造出大型火箭的技能”。此外,我国还是世界上第五个掌握静止轨道气象卫星技术的国家。四 1981年9月20日,风暴一号
On April 24, 1970, the Long March I rocket succeeded in sending the first satellite Dongfanghong I to space, marking China as the fifth country capable of launching satellites after the Soviet, American, French and Japanese. The satellite weighs 173 kilograms, more than the sum of the first satellite launched by the first four countries. This shows that our satellite industry and launch vehicles have started quite high. At that time, international authorities believed: “China launches satellites into orbit, which shows that China has mastered the advanced rocket technology and created the skills of a large rocket.” In addition, our country is the fifth country in the world to have the technology of orbiting meteorological satellite. Four September 20, 1981, the storm on the 1st