“three-phase seven-wire system”的概念、定义、翻译、参考文献-科学参考

单词	three-phase seven-wire system
释义	three-phase seven-wire system [`thrē ¦fāz `sev·ǝn ¦wīr `sis·tǝm] ^ELECTRICITY System of alternating-current supply from groups of three single-phase transformers connected in Y to obtain a three-phase, four-wire grounded neutral system of higher voltage for power, the neutral wire being common to both systems.
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