Water is attached to the dog by surface tension, they thought, and the sinusoidal shaking creates centripetal forces that ejects that water off the body.
他们认为水沾在身上靠的是身体表面的亲和力，正弦波状的抖动动作制造了水脱离身体的离心力。
These results are independent of the surface material, and are valid for both sinusoidal and ran- dom rough surfaces.
这些结果与表面材料无关，并且对正弦和随机粗糙表面都是有效的。
The fracture surface is rather rough in sinusoidal vibration, while is smooth in random vibration.
正弦振动断口非常粗糙，而随机振动断口比较平滑。
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