The economic cross section and economic ventilated velocity of shafts are the optimal matching result of civil engineering and equipment investments, operation and energy consumption.
通风井的经济断面积和经济风速是土建投资、设备投入和运营能耗的最优匹配结果。
参考来源 - 特长深埋隧道通风井经济断面积和经济风速研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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