短語(yǔ)詞組短語(yǔ)normally -closed circuit detail 常閉電路normally y closed contact 常閉接點(diǎn)normally y closed 正常閉郃的normally y closed interlock 常閉郃接點(diǎn)normally open closed contact 常開(kāi)觸點(diǎn) 返回 normally closed