scumn.槽粕;渣滓;卑贱之人v.形成浮渣;去除浮渣
scum removal除浮渣
scum barrier除渣栅
scum breaker浮渣破碎器
scum washing滤泥洗涤
scumble glaze晖映抛光
scum breaking破碎浮渣
scum discharge排渣
scum collector浮渣收集器
scum controller浮渣控制器
scum ball valve锁渣阀