pressure head

To determine the type of pump, then in accordance with the flow and pump pressure head election.

确定泵的类型后，再依流量和压头选泵。

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Study on pressure head characteristic of axial flow fan combined water jet dust-extraction fan

轴流通风机与水射流除尘风机联合工作压头特性研究

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Several basic characteristics on pressure head distribution at the surface of spur dike are described.

论述了坝体周围动水压力分布的若干基本材性。

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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。

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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.

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Theoretical pressure head and performance curves of submersible electric centrifugal pump for gas-liquid mixture

电动潜油离心泵输送气液两相介质的理论压头和理论特性曲线

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Design on pressure head and die mold of extruder for block with high hole density

高孔洞率砌块挤出机头及机口模具的设计

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Results demonstrated that the air-gap and pressure head have remarkable effect on back-flow;

人才流动的经济学分析试验结果表明气隙和压差对回流有明显影响：增大气隙或增大压差都会导致回流的增加。

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The operation performance of a spark ignition natural gas engine with two cylinders, including dynamometer card in cylinders, intake pressure liquid, air fuel ratio, temperature field of cylinder head and piston, and emission, is tested.

对一台火花点火式两缸天然气发动机进行了缸内示功图、进气压力波、空燃比、缸盖及活塞温度场和排放等项目的测试。

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Effect of Coal Grindability Indices in Fan Mills on Fineness of Pulverized Coal and Pressure Head

风扇磨煤机中煤的可磨性系数对煤粉细度和压头的影响

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The equations are solved by finite difference method and the mean and variance of pressure head are determined from its random expression.

通过摄动方法得到一系列关于水头展开式的偏微分方程，用有限差分法进行求解，获得了压力水头的随机描述，并计算其均值和方差。

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After the high-pressure Countdown round at this year's national Math Counts competition, in which the top 12 students went head to head solving complex problems in rapid fire, the finalists for the Math Video Challenge took the stage to show their videos.

在今年的Math Counts全国赛激烈紧张的倒计时轮，前12名学生正面交锋，快速解决复杂的问题，之后数学视频挑战赛决赛选手上台展示自己的视频。

六级真题- 2017年 6月 2卷 信息匹配

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.

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Now the pressure head of the pump is not able to make precise calculations in theory, the general use of experimental methods.

目前对泵的压头尚不能从理论上作出精确的计算，一般用实验方法测定。

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The valve is an impeding part with larger pressure head loss and a lot of discharge energy consumed.

风量调节阀系阻性部件，存在较大的压头损失，须消耗大量送风能量。

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Surge tank in system 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.

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Analysis of technological pressure head of CCSC

单晶连铸工艺压头分析

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Study on pressure head distribution along the gravity flexible hoses

自压软管沿程压力水头分布研究

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Application of Domestic Anti-cavitation High pressure head Control Valve in Jiangxi Thermal Plant

国产防空化高压差调节阀在江西省火电厂的应用

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A silicone oil bubbler provides a 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.

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Simulation results show that ultrasonic vibration can reduce the average power of ceramic materials and the impact region of pressure head.

仿真结果表明，超声振动能减小陶瓷材料受到的平均力及压头应力影响区域，从而减少中位裂纹的产生，降低变质层深度。

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The injection mould design of pressure head is introduced, and the points of design also elaborated.

对押头注塑模设计的实例介绍, 详细阐述了其中的设计要点.

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Cassette tape: A plastic cartridge which contains 1/ 4 inch or narrower tape, takeup reels, and a read/ record head pressure pad.

盒带：一个塑胶盒，装有1/4时或更窄的胶带，收带卷轴和写读头压力垫。

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In addition, a multipurpose pressure head to unify the sand mold hardness data is designed.

另外通过对砂型硬度计压头进行改造，设计了一款通用型压头，便于数据的统一。

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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。

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According to factors affecting pressure head along pipeline, the equations are established to calculate segment length in different pipe slopes.

本文考虑了影响多孔管沿程压力的因素，导出了各种地形坡度下变径设计计算公式。

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Simulation results were presented for the flow rate versus frequency, pressure head and input power.

得到了微型泵的频率特性，流量-压头曲线及流量随功率的变化。

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The injection mould design of pressure head is introduced, and the points of design are also elaborated.

对押头注塑模设计的实例介绍，详细阐述了其中的设计要点。

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This can be translated to lower die head pressure or lower mechanical tear and wear or higher extrusion productivity ( up to 21%) without compromising product quality.

这有助于降低口模压力，减少机械磨损或提高挤出生产率（高达21%）。

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Effect of moderate hypothermia on intracranial pressure and brain tissue oxygen tension in head injury

亚低温对颅脑损伤颅内压及脑氧代谢影响的研究

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