loose
疏松的
film
膜
loose film
疏松的膜
例句
The black and loose film of stainless steel anode was treated with KMnO4,H2O2、Carbon power ,whose colour became shallow.
不锈钢阳极上产生黑黑的疏松的膜,高锰酸钾KMnO4、H2O2、C粉处理后颜色浅了.