The spirally threaded shaft of a worm gear.

螺纹杆与齿轮相啮合；改变轴旋转运动的方向。

youdao

Worm gear drive, long-life sleeve, the machine durable.

蜗轮蜗杆传动，长寿命轴套，机器经久耐用。

youdao

Worm gear drive, long-life sleeve, the machine durable.

蜗轮蜗杆传动，长寿命轴套，机器经久耐用。

youdao