短語詞組短語Neutral solidly grounded system 中性點(diǎn)直接接地系統(tǒng)solidly grounded neutral system 中性點(diǎn)永久接地制non -solidly grounded system 小電流接地系統(tǒng)grounded system solidly 直接接地系統(tǒng) 返回 solidly grounded system