Discussion of continueous development of persified economy in Shanxi mines;
山西煤矿多种经营可持续发展的探讨
Diversified economy brings about new achievement;
新浦磷矿多种经营取得新的成绩
The discussion about the persified economy for the urban water supply enterprises;
关于城市供水企业多种经营问题的讨论
Altogether 50 pesticides, including .
通过对苹果中多种农药残留进行定性定量分析,考察方法的可行性与可靠性。
this paper discussed which one is better for the treatment of paper mill compared with using the flocculation with only one ingredient and with some ingredients, and the result is the latter is better than the former.
采用单一成分絮凝剂和多种成分絮凝剂按不同配比多种方法对污水进行处理。