The shape and perigee of artificial satellite orbits shall continually variate due to caused by the atmospherical drag and the earth gravity.
地球卫星的轨道由于大气阻力和地球引力场等因素的摄动,其形状和近地点位置将不断改变。
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，布景;The shape and perigee of artificial satellite orbits shall continually variate due to caused by the atmospherical drag and the earth gravity.
地球卫星的轨道由于大气阻力和地球引力场等因素的摄动,其形状和近地点位置将不断改变。
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