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。

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

youdao

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。

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.

youdao

指出螺旋桨噪声、水动力噪声和设备机座机械噪声被有效抑制后，管道系统便成为“安静型”潜艇的主要噪声源。

Then the pipe system becomes the main noise resource of quite submarine, when propeller noise, hydrodynamic noise and machinery noise of facility base are controlled effectively.

youdao