我做過電工，廠電6000V，頂閘時動作要快，電弧有幾寸。

來源: chinomango 於 2022-02-12 18:33:54 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.