短語(yǔ)詞組短語(yǔ)on -off valve 開(kāi)關(guān)閥;開(kāi)閉閥;雙位閥Full ON Full OFF 全開(kāi)全關(guān);也叫整張紙全關(guān)clutch on -off 離合器離合key on engine off 靜態(tài)測(cè)試模式;點(diǎn)火開(kāi)關(guān)打開(kāi);但引擎不起動(dòng);點(diǎn)火打開(kāi)引擎關(guān)閉 返回 on off