但在转换的过程中，不可避免地会发生电能的消耗，并转变为无用的热能。这中间转换率的高低即是一般我们所通称的效率。
The power consumption is unavoidable during the transferring procedure and this result in unusable thermal loss, the difference during the transfer can be named as efficiency.
但在转换的过程中，不可避免地会发生电能的消耗，并转变为无用的热能。这中间转换率的高低即是一般我们所通称的效率。
The power consumption is unavoidable during the transferring procedure and this result in unusable thermal loss, the difference during the transfer can be named as efficiency.
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