他们通常效率较低，比平行轴齿轮，不过，由于一个额外滑运动，沿牙齿。

They are usually less efficient than parallel-shaft gears, however, because of an additional sliding movement along the teeth.

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非平行的齿轮，非交叉传动的轴也有节点，但不存在纯滚动节圆的概念。

Gears on nonparallel, non-intersecting shafts also have pitch circles, but the rolling-pitch-circle concept is not valid.

youdao

在斜齿轮情况下，并且，旋转的轴不是互相平行的。

And in the case of bevel gears, the rotational axes are not parallel to each other.

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