尽管在火星上显然没有降雨，但火星探测器及火星登录车均观察到在静电力作用下集结成的类似团块。
While there is obviously no rain on Mars, landers and rovers have observed similar clumps that are held together by electrostatic forces.
美军在伊拉克集结的大幅度增加和重新筹划的策略发挥了作用。
A SURGE of American troops and a rethinking of tactics worked in Iraq.
在轴上开出沟槽或装上油环，借离心力将沿轴表面外流的油甩掉，集结后流回油池，因而起到密封的作用。
Out in the shaft loaded oil ring groove or by centrifugal force along the axis of the oil drain off the surface, the oil flows back to the assembly after the pool, and thus play a role in sealing.
应用推荐