常見例句I need to buy car relay ,please and contact us.我們需要求購(gòu)汽車?yán)^電器,請(qǐng)聯(lián)系我們。Only one relay is closed at any time.在某一時(shí)間,僅有一個(gè)繼電器是閉郃的。 返回 electrical relay