短語(yǔ)詞組短語(yǔ)normally y open contact 常開(kāi)接點(diǎn);常開(kāi)觸點(diǎn)Normally open contact number 常開(kāi)型觸點(diǎn)數(shù)量normally open closed contact 常開(kāi)觸點(diǎn)contact normally open 常開(kāi)觸點(diǎn) 返回 normally open contact