| 单词 | wheel and axle |
| 释义 | wheel and axle wheel and axle n.（名词）A simple machine consisting of an axle to which a wheel is fastened so that torque applied to the wheel winds a rope or chain onto the axle, yielding a mechanical advantage equal to the ratio of the diameter of the wheel to that of the axle.轮轴：一种简单机器，由一个与轮子联系的轴组成，这样运用轮中的转矩将绳子或链条缠卷到轴上，从而产生与轮轴直径的比率相同的机械力 |
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