n.軌道飛行器；人造衛(wèi)星
A compelling demonstration of its existence or absence may be reached from gravity and altimetry data in the proposed Europa orbiter. 一個(gè)引人注目的證明海洋存在的證據(jù)可能來自被提議的木衛(wèi)二的人造衛(wèi)星測(cè)得的重力和高度的數(shù)據(jù)。
