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- 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。
- 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。
- 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。
- 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。
- 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。
- 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
- The course contains hydrostatics, hydrodynamics, head loss and related hydraulics calculation, some special hydraulic problems and measurement of hydraulics factors. 主要讲授水静力学、水动力学基础、水头损失及有关水力计算、若干特殊的水力问题、水力要素的量测。
- Based on an experiment of head loss for long-throated flume, the flaw of water head loss calculating formula which based on the theory of boundary layer is pointed out. 在实验的基础上,指出对用边界层理论计算长喉槽水头损失公式的缺陷,分析了局部水头损失产生的机理,补充了进口侧收缩水头损失的计算,对原公式进行修正提高计量精度
- She nestled her head on his shoulder. 她将头依偎在他的肩上。
- It is shown that the relationship exists among the location of the flaring gate piers,the Froude number at the section of starting flare,the weir head,the head loss and the gate width. 研究了宽尾墩位置、始扩点水流佛汝德数与堰上水头之间的关系,导出了与水头损失、闸门宽度有关的计算公式。
- According to current engineering hydrodynamics, there s positively constant head loss in Bernoulli s theorem for identical stream line in viscous fluid, which can later turn into heat and dissipate. 现行工程流体力学与水力学理论通常认为粘性流体元流伯努利方程中的水头损失项是恒正的,并且这部分损失的机械能转变为热而耗散掉了。
- That is particularly true today as the prospect of further losses continues to unnerve private investors. 现在，基于私人投资者还将出现更大损失的预期，资金将尤其稀缺。
- Gives a calculation formula of the absolute error of specific frictional head losses. 给出了湍流区沿程阻力系数绝对误差的计算式。
- Recent moderate unit volume amplification, recovered early Tuesday Changyang losses continue to be optimistic about market outlook. 近期该股成交量温和放大，周二长阳收复前期失地，后市继续看好。
- This research tries to explore the semi-empirical and semi-theoretical head loss formula for the opposite folded-plate flocculator unit by theoretical analyses and modeling experiments. 通过理论分析及模型试验，探寻了针对异波折板絮凝单元的水头损失半经验半理论计算公式。
- The deer lowered its head to drink from the pond. 鹿低下头去喝池塘里的水。
