Through mathematic analysis, the author of this paper comes to a conclusion that negative exponential equation can not be used to elucidate the regularity of the settling of suspended matter.
通过数学分析，结论是：不能采用负指数方程描述悬浮物的沉降规律。
The composition and characteristic of suspended matter from industrial wastewater of placer gold and the experimental results of natural settling were reported.
本文介绍了砂金生产废水中悬浮物的组成、性质以及自然沉降试验结果；
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