常見例句Staniless steel sanitary welded clapper valve 不鏽鋼衛(wèi)生級(jí)銲接式加閥Have you turned off the water valve? 你關(guān)掉水閥了嗎?We need an eye bolt to fit this valve. 我們需要一個(gè)有眼螺栓來固定這個(gè)閥門。He soon detected the faulty valve. 他很快查到了出毛病的閥門。If not damaged gently close the clapper. 如果沒有損壞,則輕輕地關(guān)閉閥瓣。 返回 clapper valve