How to effectively disposal increasing sludge, neither make cost is exorbitant, and no environment form secondary pollution, environmental engineering is one of the most attention subject.
如何有效地处置日益增加的污泥，既不使成本过高，又不对环境构成二次污染，是环境工程界最为关注的课题之一。
How to effectively disposal increasing sludge, neither make cost is exorbitant, and no environment form secondary pollution, environmental engineering is one of the most attention subject.
如何有效地处置日益增加的污泥，既不使成本过高，又不对环境构成二次污染，是环境工程界最为关注的课题之一。
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