frequency change controller
frequency change controller
变频控制器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Presently, induction motor is mostly used for frequency-change air conditioner compressor, but it has such drawbacks as low efficiency and complicated controller.
目前变频空调压缩机大多采用感应电动机驱动，而感应电动机效率低，变频控制器比较复杂。
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