常見例句雙語例句Rings for automotive engine usually have butt joints, but in some heavy-duty engines, the joints may be angled, lapped, or of the sealed type.汽車發(fā)動機上的活塞環(huán)通常是有接口的。但在一些重型發(fā)動機上,活塞環(huán)的接口可以是斜角接口,搭接式或密封式的。 返回 lapped butt