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本文以《湖南省市政工程单位估价表》（1995）为依据，通过最优化计算分析，建立了湖南省排水管道工程建设费用函数．并对这个函数作了误差分析．
Based on “Valuation Table of Municipal Engineering Units in Hunan Province” (1995), this paper establishes the cost function of drainage pipelines in Hunan Province through optimization calculation and analysis. And made an error analysis of this function.