scumn.槽粕;渣滓;卑贱之人v.形成浮渣;去除浮渣
scum hole出渣口
scum cock排污开关,放沫旋塞
scummings浮渣
scum juice带泥糖汁,渣汁
scum yeast浮膜酵母
scum riser集渣冒口,集渣包
scum layer浮渣层
scum press滤泥压干机
scum space浮渣空间
scum-offn.除浮渣