... three-phase source；三相电源 three-phase system；三相系统 three-phase voltage；三相电压 ...
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三相系统基准值 Base Values
三相系统图 three-phase system diagram
对称三相系统 balanced three-phase system
不对称三相系统 asymmetrical three phase system
三相三线系统 PQF ; three-phase three wire system
三相四线系统 three-phase four-wire system ; PQFK ; three-phase four wire system
三相步进系统 Stepping System
三相UPS系统 three phase Uninterrupted Power System
交流单相三线系统 single-phase three-wire AC system
既可用在三相系统，也可用在两相(或单相)系统。
It can be used either in two phase system or in triphase system.
此外，在三相系统中，建议使用使所有三个波形对称。
Also in three-phase systems it is advisable to USES so that all three waveforms are symmetric.
三相系统中，某的电压或电流与其它相不相同时，就出现幅值与或。
Unbalances appear in a three-phase system when voltages or currents differ from on phase.
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