The selection of level of no motion is a basic problem in calculating the geostrophic flow in the East China Sea Kuroshio area.

零流面的选取是东海黑潮地转流计算中的一个基本问题。

youdao

But then it was discovered that actually when you look at motion at really small levels - beyond the level of the atoms - Newton's laws no longer apply.

但是当你观察比原子更小层面的微观世界，你会发现牛顿定律不再适用了。

youdao

By using the motion equations of constant thrust maneuver, there is no limit on the thrust-level and no restraints on the relative distance when used in spacecraft rendezvous.

应用常推力作用下的质心运动方程，对机动推力的量值没有限制；在航天器交会应用中，对相对距离也无要求。

youdao