"密闭排放"怎么翻译比较合适? 本帖最后由 fallweed 于 2013-9-13 14:21 编辑 closed drain (cd), open drain (od) the word "closed" refers to the fact that the drainage system is not open to atmosphere. the fluid is hazardous/flammable so that it must be piped in a closed piping system, not in contact with atmosphere, to the recovery vessel. 查看更多