polarity relay 中文意思是什麼
polarity relay
解釋
極化繼電器-
It is composed of four parts : dc ( direct current ) power supply, resonance charging and polarity reverse unit, electric relay control unit and computer control unit
它主要由四部分組成:三相整流直流電源,諧振充電及電壓反向單元,繼電器控制單元,計算機控制單元。
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