rotary drier

例句：

1. 1. The machine isdesigned to rotate the parts in a circularmotion.
   这台机器设计成使部件以圆周运动旋转。
2. 2. Therotary valve is usedto control the flow of gases.
   旋转阀用于控制气体的流量。
3. 3.The rotary saw has a sharp bladethat can cut through wood quickly.
   旋转锯有一个锋利的刀片，可以快速地切割木材。