近地点

rén zào dì qiú wèi xīng de guǐ dào yīn dà qì zǔ lì hé dì qiú yǐn lì chǎng děng yīn sù de shè dòng qí xíng zhuàng hé jìn dì diǎn wèi zhi jiāng bù duàn gǎi biàn

人造地球卫星的轨道因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。

The shape and perigee of artificial satellite orbits shall continually variate due to caused by the atmospherical drag and the earth gravity.