The wheel and axle is made up of a circular frame that revolves around a shaft or rod — a device that, in its earliest forms, was probably used for lifting water buckets from wells.
轮轴是由一个围绕轴或杆旋转的圆形框架组成的——这种装置在其最早的形式中，可能用于从井中提水桶。
wheel and axle
英汉-汉英词典
n. 轮轴
词组 | 习惯用语
您要查找的是不是：
axle wheel and axle 轮轴
rail wheel and axle 火车轮轴
centrifugal wheel and axle 偏心轴
wheel and axle [车辆] 轮轴
原声例句
大英百科全书
中文百科
轮轴
轮轴是六种简单机械之一，是文艺复兴时期的科学家绘制希腊时期的科学文献时所识别出来的。轮轴可视为是轮和轴的组合，二者一起旋转，力可以从轮传递到轴，也可以从轴传递到轮。一般会用轴承固定轴的位置，而又使轴可以旋转。
亚历山卓的希罗将轮轴列为五个可以提升重物的简单机械之一。一般认为他所指的是起重辘轳，可以回转把手，以省力的方式用绳子将重物提高，例如将井里的水桶提到井口。
轮轴可视为另一种特别的杠杆，其施力是和轮轴的切线平行，轮轴的中心为其支点。轮轴的机械利益是其施力位置距轮轴中心的距离比值，也是轮的半径和轴的半径的比值。
英语百科
Wheel and axle 轮轴
The wheel and axle is one of six simple machines identified by Renaissance scientists drawing from Greek texts on technology. The wheel and axle is generally considered to be a wheel attached to an axle so that these two parts rotate together in which a force is transferred from one to the other. In this configuration a hinge, or bearing, supports the rotation of the axle.
近义、反义、联想词
近义词
n.hoist
英英词典
wheel and axle n.
- hoist so arranged that a rope unwinding from a wheel is wound onto a cylindrical drum or shaft coaxial with the wheel
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