锤(3)与活塞(5)的质量匹配产生更高的效率、撞击能量的更小的角度变化和更轻的重量。
Matching the mass of the mallet (3) to the plunger (5) yields higher efficiency, less angular variation of the impact energy and lighter weight.
本文讨论了活塞撞击引起的发动机振动特性，指出利用表面振动信号判断活塞缸套间的间隙状态是可行的。
Based on the engine vibration character induced by the piston impact on the cylinder, it is practical to judge the clearance condition between them by engine surface vibration intensity.
构成气体的数量极大的粒子是向各方面运动的，它们撞击容器的壁与活塞，撞了又跳回来，正如掷到墙上的球一样。
A tremendous number of particles constituting the gas are moving in all directions. They bombard the walls and the piston, bouncing back like balls thrown against a wall.
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