The shape and perigee of artificial satellite orbits shall continually variate due to caused by the atmospherical drag and the earth gravity.
人地卫星的轨道由于大气阻力和地引力场等因素的摄动,其形状和近地将不断改变。
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On October 4,1957, when Sputnik went into orbit, people were so upset.
1957 年 10 月 4 日，当球卫星进入轨道的候异常不满。
The first artificial Earth satellite in the world has now been created. This first satellite was today successfully launched in the USSR.
“世界上第一颗球卫星已经诞生，今天，苏联成功发射第一颗卫星。”
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详细解释
地
卫星的轨道由于大气阻力和地引力场等因素的摄动,其形状和近地
将不断改变。
球
球
候
异常不满。
