Now I'm really fantastic at drawing this mechanical device, but you can imagine that dropping weight can cause a paddlewheel to turn.

现在我真的很沉迷机械装置，但是你可以想象重物掉落的时候会带动桨轮旋转。

youdao

Now I'm really fantastic at drawing this mechanical device, but you can imagine that dropping a weight can cause a paddle wheel to turn.

机械装置的时候，我真的很着迷，你可以想象，当重物掉落的时候会带动桨轮旋转。

youdao

Marking chamfer and taper is a routine work in Mechanical drawing.

在机械制图中，通常需要进行大量的倒角和锥度的标注工作。

youdao

now I'm really fantastic at drawing this mechanical device, but you can imagine that dropping a weight can cause a paddle wheel to turn.

机械装置的时候,我真的很着迷，你可以想象,当重物掉落的时候会带动桨轮旋转。

麻省理工公开课 - 热力学与动力学课程节选