Ringon林贡ringn.戒指；环；圈；拳击场；马戏场；帮派n.铃声；钟声；电话；口气v.包围；环绕；形成圈v.打电话；回响；鸣响；按铃；听上去ring piston meter筒形活塞式流量计ring-roll press环辊压力机ring pre-stress环向预应力ring chlorination环上氯代作用ring break method环路切割方法ring step bearing环形止推轴承ring roll crusher环辊破碎机ring bud grafting环状芽接ringing back tone[电] 回报铃音ring strain gauge环式应变计