three-phase four wire installation
... three-phase four line 三相四线制 three-phase four wire installation 三相四线装置 three-phase four core cable 三相四心电缆 ; 三相四芯电缆 ...
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three phase four-wire system
电气工程师 ... 三相四线制 three-phase four-wire system 三相四线装置 threephase four-wire system 三相油浸式变压器 threephase oil immersed transformer ...
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