The output power can never equal the input power, for there are always losses.
输出功率决不可能等于输入功率因为总有损耗。
The output power can never equal the input power, for there are always losses.
输出功率决不可能即是输进功率由于总有损耗。
The output power can never equal the input power, for there are always losses.
输出功率绝不能等于输入功率，因为总存在着损耗。
The output power can never equal the input power, for there are always losses.
输出功率绝不能等于输入功率，因为总存在着损耗。
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