frequency power electroplating
频率电源电镀
以上为机器翻译结果，长、整句建议使用 人工翻译 。
And some foreign power supply units for electroplating also have certain disadvantages, such as limited adjustable range of impulse width, and non-adjustable impulse frequency.
某些国外电镀电源虽然也实现了程控，但也存在一定的缺陷，如脉宽调节范围较窄，脉冲频率不可调等。
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