bucket wheel machine 中文意思是什麼
bucket wheel machine
解釋
斗輪機-
The wheel and axle is really a sort of lever. an example of such a machine is the device used in old - fashioned wells to hoist up the water bucket
輪軸實際上是一種杠桿。在老式水井中用來提上水桶的裝置就是這類機械的一個例子。
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