如果机器的输入和输出功率已知，他的机械效率就可以计算。
For any machine whose input force and output force are known, its mechanical advantage can be calculated.
作者认为，浓差能与机械能本质是相同的，任何理想机器最大输出功率处的浓差能转换率都不会超过66.67%。
It is esteemed that CGE is same as mechanical energy in quality and the efficiency conversion of CGE of any ideal machinery won't be able to exceed 66.67 % at their maximum power-output points.
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