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- 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
- The Study on the Head Loss Calculation of Micro-tube 微管沿程水头损失计算方法试验研究
- head loss calculation 水头损失计算
- 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。
- 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。
- 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。
- Downhole annular pressure is a key parameter.Conventional pressure loss calculation method is not applicable to a slin - hole. 井底环空压力是小井眼钻井的关键参数，通常的压力降计算方法对小井眼不适用。
- 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。
- The improved loss calculation method can improve the accuracy of digital oscilloscopes with a measurement error of less than 5%. 通过分析提出了开通和关断损耗的改进计算方法，在获得较高准确度（95%25）的同时可降低对示波器测量分辨率的要求。
- 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。
- This paper gives an analysis of the three methods of incremental loss calculation for power systems and the relations between them. 本文分析了计算电力系统网损微增率的三种方法及它们之间的相互关系。
- 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。
- Sum of annual costs of losses calculated to present values. 按现在值计算的年度损耗费用的总和。
- 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。
- Abstract: Compared with traditional civil lawsuit, environmental civil lawsuit has such characteristics as broadness in lawsuit subjects, complex loss calculation, long lawsuit limitation. 文章摘要: 与传统的民事诉讼相比，环境民事诉讼具有诉讼主体广泛、损失计算复杂、诉讼时效长等特点。
- She nestled her head on his shoulder. 她将头依偎在他的肩上。
