此链轮齿数一定，链轮每旋转一圈，链条与相邻二齿中的一个齿啮合，此齿数定义为”工作齿数”。

The number of teeth of the sprocket is determined so that chain meshes with one of every two teeth of sprocket per turn of the sprocket. This number of teeth is termed "number of working teeth."

youdao

此链轮齿数一定，链轮每旋转一圈，链条与相邻二齿中的一个齿啮合，此齿数定义为”工作齿数”。

The number of teeth of the sprocket is determined so that chain meshes with one of every two teeth of sprocket per turn of the sprocket. This number of teeth is termed "number of working teeth."

youdao