variable-polarity square-current
variable-polarity square-current
variable-polarity square-current
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The power can output several kinds of welding current such as variable polarity square wave AC, DC and pulse current etc.
该电源可实现变极性方波交流、直流、脉冲电流等多种输出。
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