短語(yǔ)詞組短語(yǔ)zero -crossing point characteristics 過(guò)零點(diǎn)特性Back EMF zero -crossing point detection 反電勢(shì)過(guò)零點(diǎn)檢測(cè)ZCP Zero Crossing Point 過(guò)零點(diǎn)ZCP P Zero Crossing Point 過(guò)零點(diǎn)switch current zero crossing point 正反組電流過(guò)零法 返回 zero crossing point