介绍了铜加工厂重金属离子酸性废水的危害及治理方法。
The harm and the administering means of acid wastewater containing heavy metal ion for copper processing factory were introduced in this article.
通过某机场工程实例，详细阐述电压骤降主要危害及治理对策。
This paper elaborates the main hazards of voltage sag as well as the solutions based on an instance of certain airport engineering.
文章分析了我国“下压型”财政体制的主要表现、成因、危害及治理对策。
The text analyzes the characters, causes and damages of "pressing" financial system and puts forward solutions.
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