The ratio of the energy output of a machine to the energy input.
由某种机械输出的能量与输入到其中的能量的比率。
Efficiency (EFF) Efficiency is the ratio of energy output to energy input, such as the ratio between the electrical energy input to a motor and the mechanical energy output at the shaft of the motor.
效率 效率是输出能量与输入能量的比率，例如输入到电动机的电能与电机轴承输出的机械能的之间的比率。
Efficiency (EFF) Efficiency is the ratio of energy output to energy input, such as the ratio between the electrical energy input to a motor and the mechanical energy output at the shaft of the motor.
效率 效率是输出能量与输入能量的比率，例如输入到电动机的电能与电机轴承输出的机械能的之间的比率。
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