clapper valve英 [ˈklæpə(r) vælv]美 [ˈklæpər vælv]瓣阀;止回阀;单向阀英英释义nouna simple valve with a hinge on one sideSynonym:clack valveclack双语例句Leave the cam assembly clapper parallel to the valve body.使得凸轮总成阀瓣平行于阀体。