结果表明，在管道一定时，注水管道经济流速略大于经验值。
The results show that the economic velocity is slightly larger than experience Numbers as the same pipeline.
同时还对卧式空气预热器的经济流速和最佳风烟速比进行了讨论。
The economical gas velocity and a optimal velocity proportion of air to gas for designing air preheater are also discussed.
本文研究钢管的使用壁厚以及不同工作压力及使用状况下的经济流速。
The adopted thickness of steel pipe and the economic flow rate in it under different pressure and working conditions are described in this paper.
该模型将同时得到经济流速、设备及管道最佳直径和经济保温厚度，可作为管道工艺设计的基础；
Meanwhile, the economic flow rate, optimum diameter and economic insulating layer thickness of the equipment and pipeline have been obtained with the model, which provide a basis for pipeline design.
讨论了流速分布均匀性对催化转化器转化效率和载体寿命的影响；压力损失对发动机动力性、经济性的影响。
The effects of the velocity distribution uniformity on conversion efficiency and durability and pressure loss on engine power and fuel economy have been discussed.
重点分析了板式换热器在地热供暖系统中材料、单片面积、流程、流道、流体流速等选取的原则；在综合考虑技术、经济、环境效益及节能的基础上，论述了对板式换热器优化设计的方法。
This paper discussed the design criteria of material selection, the area of single unit, flow path, flow rate of a plate heat exchanger (PHE)in a geothermal heating system.
这将迅速地改善交通流速，降低污染并增加来自公共交通的经济回报。
This will immediately improve traffic flow, reduce pollution and increase the commercial returns derived from public transport;
这将迅速地改善交通流速，降低污染并增加来自公共交通的经济回报。
This will immediately improve traffic flow, reduce pollution and increase the commercial returns derived from public transport;
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