tumbling shaft的用法和样例：
例句
- With cylindrical eccentric shaft vibration exciter and partial block to change the amplitude, the screen cloth is in a long line and has many sizes.
与圆柱偏心轴激振器及部分块，以改变振幅，屏幕布，是在放长线，且有许多的大小。 - The metal shaft, called the camshaft, typically has individual cams for each valve in the engine.
那金属轴叫凸轮轴，在发动机里的每个气门一般有各自的凸轮。
