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pumping
相关语句
  泵送
    Question about the pumping of concrete pump out of step
    混凝土输送泵泵送不同步原因分析
短句来源
    Analysis of the Fundamentals of Upstream Pumping Mechanical Seal
    上游泵送机械密封的基本原理分析
短句来源
    Application of Upstream Pumping Mechanical Face Seal on Liquefied Gas Pump
    上游泵送机械密封在液化汽泵上的应用研究
短句来源
    Experimental Study on Performances of Upstream Pumping Mechanical Face Seal
    逆流泵送机械密封试验研究
短句来源
    Development and Application of Upstream Pumping Mechanical Face Seals
    上游泵送机械密封的研究开发及应用
短句来源
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  “pumping”译为未确定词的双语例句
    The CAD of Inlet passage of an Axial Flow Pumping Station
    轴流泵站进水流道的CAD
短句来源
    PHOTOVOLTAIC PUMPING SYSTEM BASED ON A SWITCHED RELUCTANCE MOTOR
    采用开关磁阻电动机的光伏水泵系统
短句来源
    Performance Analysis of Switching - mode Photovoltaic Pumping System
    转换式太阳能光电水泵性能的分析
短句来源
    THE WATER HAMMER CONTROL PROTECTION WITH TWO-STAGE CLOSING VALVE AT PUMPING STATION
    泵站水锤两阶段关阀调节防护
短句来源
    Research on Controlling Waterhammer at Pumping Stations by Combined Operating Back Valve and Bypass
    逆止阀与旁通管联合运用控制泵站水锤的研究
短句来源
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  pumping
The main technology for high power fiber lasers, including laser diode beam shaping, fiber laser pumping techniques, and amplification systems, are discussed in detail.
      
The heat transfer enhancement under identical pumping power condition for the attack angle of 30° is larger than that for the attack angle of 45° either for staggered or for aligned tube bank arrangement.
      
Meanwhile, principles of several typical pumping methods such as mechanical, electromagnetic or peristaltic pumps will be illustrated.
      
pumping power per unit heat transfer area were plotted.
      
Proton Pumping in Growing Part of Maize Root: Its Correlation with 14-3-3 Protein Content and Changes in Response to Osmotic Str
      
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In this article equations for evaluating the most economical pipe diameter, for which the sum of pipe and pumping costs must be a mininum. have been derived for the turbu- lent at well a, the viscous regions of flow. The retulting equations are represented by convenient nomographs. By solving the optimum -- diameter equations for the case of critical Reynold number, it has been found possible to decide whether any given flow will be turbulent or viscous in a pipe of optimum diameter. At these equations...

In this article equations for evaluating the most economical pipe diameter, for which the sum of pipe and pumping costs must be a mininum. have been derived for the turbu- lent at well a, the viscous regions of flow. The retulting equations are represented by convenient nomographs. By solving the optimum -- diameter equations for the case of critical Reynold number, it has been found possible to decide whether any given flow will be turbulent or viscous in a pipe of optimum diameter. At these equations and charts are all based on the Present cost index of our country, they are expecied to be more usefol in the choice of the most economical pipe diametr in our country.

本文对于决定湍流及层流区最经济管径(总费用最低)的公式进行了推导,而且把它制成了便 于应用的算图。联解临界雷纳准数及最适宜直径方程式,得到一个便于预先决定流型的关系式。本 文所推导的公式及算图都是以我国目前的价格指标为依据,因此应用它来选取经济管径应当是适合 于我国情况的。

The starting characteristic of pumping station of large size presents an important problem for the design and selection of motive motor. The parameters of the starting characteristic depend to a great extend upon the type of whole installation, of which two main kinds will be discussed, one with outlet siphon and the other with drop gate. To obtain the starting characteristics two methods by experi-mental and computing means are given for different installations. The dynamic hydraulic moment caused by...

The starting characteristic of pumping station of large size presents an important problem for the design and selection of motive motor. The parameters of the starting characteristic depend to a great extend upon the type of whole installation, of which two main kinds will be discussed, one with outlet siphon and the other with drop gate. To obtain the starting characteristics two methods by experi-mental and computing means are given for different installations. The dynamic hydraulic moment caused by flow resistance is approximated with the static characteristic, and exact values was also obtained by electronic computer. A computer program is given in this article too.

大型水泵的启动特性在进行原动机的设计和选择中具有重要的意义,而水泵的启动性能在很大程度上决定于整个装置情况。本文观察了具有虹吸和拍门装置出水型的两种装置,提出了用静态特性进行启动性能的近似计算方法,精确的数值可用电子计算机方法求得,文中列出了电子计算机的框图。

This paper presents the equations for theoretical pressure head and performance curves of submersible electric centrifugal pump for gas-liquid mixture. These equations, differing from those for pumping single-phase liquid,involve two important parameters-the volumetric ratio of gas phase at theimpeller inlet Ki and the relative slip coefficient of gas to liquid at the outlet. For any given parameters Ki and r,the theoretical performance curves of sudmersible electric centrifugal pump for gas-liquid mixture...

This paper presents the equations for theoretical pressure head and performance curves of submersible electric centrifugal pump for gas-liquid mixture. These equations, differing from those for pumping single-phase liquid,involve two important parameters-the volumetric ratio of gas phase at theimpeller inlet Ki and the relative slip coefficient of gas to liquid at the outlet. For any given parameters Ki and r,the theoretical performance curves of sudmersible electric centrifugal pump for gas-liquid mixture Ht,m-Qm maintain linear relationship, and this family of straight lines interests the ordinate at a single point Ht,m.

电动潜油离心泵(简称电泵)输送气液两相介质的试验研究成果已在文献[1]中给出。为了建立电泵输送气液两相介质的基本工作理论,本文推导了输送气液两相时电泵的理论压头和理论特性曲线(压头—排量特性曲线)的分析表达式。

 
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