短語詞組短語blow -out contact 滅弧接點electromagnetic blow -out 電磁熄弧;電磁熄弧器spark blow -out 火花熄滅blow w out 吹滅coil blow -out 熄弧線圈blowout preventer 防噴器；消火花預(yù)防裝置 返回 blow out