no secondary environmental pollution
... secondary water pollution 次生水污染 No Secondary Environmental Pollution 不会二次环境污染 Without Secondary Pollution 无二次污染 ...
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no secondary environmental pollution
无二次环境污染
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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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