A cushioning device, such as a bundle of rope or a piece of timber, used on the side of a vessel or dock to absorb impact or friction.
缓冲装置一种减小震动或冲撞力的装置，如一捆绳子或一块木头，用在船或船坞的侧面以承受撞击或摩擦力。
A friction plate with a hole for connecting piece of axle is superposed on the armature.
一摩擦片，叠置于衔铁上，中央具连轴块孔；
The machine also has its own heat sources: motors, friction from machine motion, and the cutting action of the tool on the work piece.
热力因素：来自内部和外部的热量是床身变形的主要原因。
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