電壓有虛電壓和滿負載電壓之分，虛電壓是在空載時所測電壓，滿負載電壓是所有用電器都打開時電壓。到另件電，可測到滿負載電壓。

來源: cgh 於 2019-02-12 19:16:26 [舊帖] [給我悄悄話] 本文已被閱讀：次

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