The research on design and construction scheme of old Feihe River temporary steel bridge shows that the design scheme is successful.

关于老淝河钢便桥设计和施工方案的研究表明，其设计方案是成功的，可为类似工程提供借鉴。

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The results showed that the water quality in the whole basin was not good, and organic pollutant was the main cause of the water pollution in the South Feihe River.

结果表明，南淝河流域水环境质量总体较差，有机污染物是造成南淝河水质污染的主要原因。

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Based on the principal component analysis theory, a water quality comprehensive evaluation model was established and was used to evaluate the water quality of the South Feihe River.

基于主成分分析理论，建立了水质综合评价模型，以南淝河为例，对南淝河的水环境质量进行综合评价。

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