speed pulley
英
美
- 变速皮带轮
双语例句
- The belt started wrapping up on the tractor pulley.
皮带开始绕在拖拉机的皮带轮上。 - Attach the pulley which is held by hand with screws.
用螺丝安装皮带轮的手持部分。 - The lifting device is a system of rope and pulley.
这种起重装置是由缆索和滑轮组成的。 - A single fixed pulley does not help to save effort.
一个单独的固定的滑轮不能帮助节省气力。
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