然而，土星的高速自转意味着它能够在洛希极限中保持着一个卫星直到“猛烈轰击”。
Yet Saturn's rapid rotation meant it could hold a satellite within its Roche limit until the bombardment.
这样做的目的是为了在地球自转的同时，使卫星能够绕地球同速转动。
The idea is that the craft circles ourplanet at the same speed as Earth’s rotation about its axis.
同时还讨论了在地面和卫星的激光时间比对实验中由于地球自转效应的相对论改正问题，提出了一种实用计算公式。
The relativistic correction due to earth rotation for both terrestrial and satellite time comparison experiments via laser pulses has been discussed and a practical calculation formula is proposed.
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