常見例句雙語例句The shape and perigee of artificial satellite orbits shall continually variate due to caused by the atmospherical drag and the earth gravity.人造地球衛(wèi)星的軌道由于大氣阻力和地球引力場等因素的攝動，其形狀和近地點(diǎn)位置將不斷改變。 返回 atmospherical drag