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- pressure head loss 压头损失
- Curtain coat can be pressure head, flow head (WEIR) or roller curtain coater. 淋涂可能配压力嘴，淋涂滚。
- A silicone oil bubbler provides a positive gas pressure head inside the growth tube at all times. 硅酮油起泡器能始终在生长管内产生一正气压位差。
- Chiu and Seman(1971)studied the head loss of flows transporting sediment in circular and square pipes with spiraling motion. 邱和思门（1971）研究了在圆管和方形管中输沙时具有螺旋运动的水流的水头损失问题。
- The critical velocity and the head loss gradient of slurry pipelines are important design parameters. 临界速度和水头损失坡降是浆体输送管道的重要设计参数。
- It is frequently referred to as "pressure head" when expressed in terms of energy per unit weight of water. 当以单位水重的能量来表达时,经常看作为“压头”。
- Flow regime and head loss of two different tailrace systems in hydropower station were investigated. 对两种不同的尾水系统布置方式进行了流态和水头损失的对比分析。
- Surge tank in syste m can reservior transient flowrate and dampen out transient pressure head. 系统中设置调压塔可以调蓄瞬变流量和阻尼瞬变压力水头。
- In this paper,the influence of orifice-induced pressure head on pit corroded piping is studied. 研究了节流孔板引起的压差对含腐蚀坑点的管道系统的影响。
- Unique design features in the 1710 Series give improved flow measurement accuracy as well as a lower head loss characteristic compared to other valves. 与其它结构平衡阀相比,1710系列平衡阀独特的结构,改善了流量测量的精确度,减少了压头损失。
- The Dall flow tube is an empirical design with an extremely high pressure head recovery. Dall流量管是具有特别高的压头补偿的实验装置。
- Unique design features in the 1710 give improved flow measurement accuracy as well as a lower head loss characteristic compared to other valves. 与其它阀门相比，1710独特的结构特征能够改善流量的量测精度，减少压力损失。
- A heat exchanger pipe with continuous helical baffles was proposed.Pressure distribution and head loss of the heat exchanger pipe were calculated. 摘要提出了一种连续螺旋折流板换热管，对其内部流场进行了数值模拟，并进行了物理模型实验验证。
- The conflict of head loss development and effluent quality decline should be fully considered in determining backwashing parameters. 好气滤池的反冲洗应综合考虑反冲洗后滤池出水水质下降和水头损失恢复之间的矛盾。
- Based on the combination of the theoretical analysis and flume experiment, the local head loss associated with pile permeable groins is discussed. 为此，结合理论分析和水槽试验对其局部水头损失进行探讨。
- It is composed of open type engine body, hydraulic power cylinder, upper pressure head, and lower type box. The type box can be collocated with manual four-positions renewal. 有开式机身、液压动力缸、上压头、下字盒等组成。下字盒可配手动四位根据用户要求更换。
- But water head loss of filter for aluminium sulphate polysilicate application will grow quicker than that for aluminium sulphate . 残留的铝含量降低，而残留硅的含量没有增加，但投加聚硅硫酸铝会导致滤池水头损失增加。
- With three engineering examples, analyses the underheated problem because of deficiency of the pressure head and flow rate, and presents an effective solution to the problem. 摘要结合三个实例分析了供热管网末端用户因压头和流量不足而导致的不热问题，提出了切实可行的解决方法。
- The cone impeller lean backwards, the blending quantity is big and the pressure head is small, the advantages are: simple structure and low energy consumption. 这是一种叶片后倾一个角度的锥形叶轮，类似于高比转速的离心泵轮，扬送矿浆量大、压头小、功耗低且结构简单。
- The water head loss is low. When water flow through 0.9m-thick zeolite, flow rate is 2.6m/h, 4.2 m/h, 7.4 m/h, and the water head loss is 3-5cm,8-12cm,and 15-20cm, respectively. 沸石具有很好的通透性，水流通过0.;9米厚的交换层时，2
