同时探讨了海冰对冰下海洋的动力作用。
构造动力作用可引起地壳局部地带一系列能量的转换。
The tectonic dynamic process can cause a series of transitions of energy.
垃圾产业化对垃圾分类收集起到的是拉动力作用，是分类收集的重要条件；
Second, the industrialization of waste is a motivity and an important condition of classification.
在人力作用下，通过手柄的转动将动力传到刀盘。
Role in human, by turning the handle to power the cutter reached.
在人力作用下，通过手柄的转动将动力传到刀盘。
Role in human, by turning the handle to power the cutter reached.
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