n.装齿(锯齿状；齿连接；啮合；齿圈)
The teeth of one wheel engage with those of the other. 一只轮子上的轮齿与另一只的相啮合。
Gear teeth in mesh. 相互啮合的齿轮
The engagement of gear teeth. 啮合齿轮的互相咬合
