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双流道     
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  double channel
     Under the environment of Visual C++6.0, the parametric 3-D modeling software PCAD-3D is developed, which includes column blade, curved blade, double channel impeller, volute and radial vaned diffuser, etc.
     在Visual C++6.0编程环境下,开发了扭曲叶片、圆柱叶片、双流道叶轮、蜗壳和径向导叶等的参数化三维造型软件PCAD-3D。
短句来源
     Hydraulic Design Method of Impeller With Width-Variation Double Channel and its CAD Software
     变宽双流道叶轮的水力设计方法及CAD软件
短句来源
     4) Basis on the hydraulic test, the hydraulic performance and wear of flow parts of the double channel pump delivering different liquid-solid fluid are studied, and some performance and wear features are revealed, which lays experimental and theoretical basis to further research.
     4)在试验基础上,对双流道泵输送含不同固体颗粒的固液两相流的水力性能及过流部件的磨损情况进行了研究分析,得出了双流道泵在输送该两相流时的水力性能变化及磨损情况,为以后进一步深入研究积累了经验基础和理论基础。
短句来源
     The Design and Experimental Research on Underwater Liquid-solid Two Phase Double Channel Pump
     水下运行环境的固液两相双流道泵的设计与试验研究
短句来源
     Research on Non-overload Design of Double Channel Impeller Hydraulic Model
     双流道叶轮水力模型无过载设计研究
短句来源
更多       
  double-channel
     Performance prediction of double-channel pumps
     双流道泵性能预测的研究
短句来源
     Improved method for hydraulic design of double-channel pumps
     双流道泵水力设计的研究
短句来源
     Design and Experimental Research on Double-channel Pump of Solid-liquid Two-plase
     固液两相双流道泵的设计与试验研究
短句来源
     Advances in Hydraulic Design of Double-channel Pump
     双流道泵水力设计研究现状及发展方向
短句来源
     Numerical Simulation for Incompressible Turbulent Flow in Impellers of Double-Channel Pumps
     双流道泵叶轮内湍流的数值模拟
短句来源
更多       
  double-flow-passage
     Research on the Designing Method of Double-flow-passage Impeller
     双流道叶轮设计方法研究
短句来源
     In order to provide references on impeller of double-current designing ,based on the existing documents about impeller designing methods of double-flow-passage,some methods are introduced exhaustively.
     双流道叶轮设计采用变宽流道设计法,容易造成高效区向大流量偏移设计点效率偏低,因此需要对流道面积进行控制。
短句来源
  dual-flow channel
     Design of ultra-high pressure system for dual-flow channel PDC bit.
     双流道PDC钻头超高压系统的设计
短句来源
     STUDY ON ROCK-BREAKING MECHANISM OF HIGH-PRESSURE PDC BIT WITH DUAL-FLOW CHANNEL
     超高压双流道PDC钻头破岩机制研究
短句来源
     In order to make full use of down-hole hydraulic energy and improve penetrating efficiency by means of combined action of water jet and cutting tooth, a ultra-high pressure dual-flow channel PDC bit is designed.
     为了充分有效地利用井底水力能量,使水射流与切削齿联合作用破碎岩石,提高破岩效率,设计了超高压双流道PDC钻头。
短句来源

 

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      double channel
    Elaboration and use of a double channel detection ion chromatographic method for determination of ions in aqueous samples
          
    Because in some cases it can be important to gather more detailed information on the composition of a sample, we present a way to meet this demand by using double channel detection.
          
    Comparison of single and double channel I/O-configurations
          
    It can be carried out in a double channel manifold, using a magnetically well stirred dilution chamber for the emulsification of the samples, previous to their analysis by flame atomic absorption spectrophotometry.
          
    The resonance frequency in the small-signal modulation response of devices depends on the etching depth of the U-shaped double channel; it increases from 0.4?GHz without channel etching to 4.3?GHz with 7-μm-thick etching.
          
    更多          
      double-channel
    This suggests a double-channel transport mechanism: one related to porous-silicon "volume" properties and the other more connected to the "surface" itself.
          
    Sample ashes, obtained in the muffle, are diluted with nitric acid and the obtained slurry is introduced directly into an air-C2H2 flame for the analysis of Fe, Mn, and Zn, or injected into a double-channel FIA manifold to determine Ca, Mg and K.
          
    A new method is proposed for simultaneous determination of traces of arsenic (As) and selenium (Se) in biological samples by hydride-generation double-channel non-dispersive atomic-fluorescence spectrometry (HG-AFS) from tartaric acid media.
          
    A double-channel spectrometer, which enables to acquire ultrabroadband single-pulse spectra of liquids by Coherent Anti-Stokes Raman Spectroscopy (CARS), is described.
          
    InGaAsP/InGaAsP multiple-quantum-well (MQW) double-channel planar-buried heterostructure (DCPBH) lasers emitting at λ~?1.57?μm were fabricated by optimizing the epitaxial growth with material characterization.
          
    更多          


    The Wire-line core drilling technology being perfected promotes the development of bit replacing technology without lifting the rod. Heretofore, this technology has never come up to a practical stage due to some technical difficulties. The BH 75 drilling stool for bit replacing without lifting the rod has used a reaming wing bit of wedge folding structure, a double sighting orientation system and a double passages for water injection, and a high intensity torque transmission mechanism. It is characterized by...

    The Wire-line core drilling technology being perfected promotes the development of bit replacing technology without lifting the rod. Heretofore, this technology has never come up to a practical stage due to some technical difficulties. The BH 75 drilling stool for bit replacing without lifting the rod has used a reaming wing bit of wedge folding structure, a double sighting orientation system and a double passages for water injection, and a high intensity torque transmission mechanism. It is characterized by its simple structure and reliable performance. In its trial tests good results were yielded.

    绳索取心钻进技术的推广应用,促进了不提钻换钻头技术的开发。这项技术难度较大,迄未达到工业应用阶段。BH7不提钻换钻头钻具,由于采用扩孔翼(副钻头)楔面收敛结构,双级瞄向定位系统与双流道通水方式,以及高强度传扭矩机构,因而具有结构简单、性能可靠的特点,并在生产中获得了良好的经济技术效果。

    The multiple jet characteristics of a post combustion dual oxygen flow lance used for 15 t converter of Nanjing Iron and Steel Plant have been experimentally investigated by means of a multiple pressure scanivalve measurement system controlled by a microcomputer. The distributions of the jet velocity and the jet pressure, as well as jet isovelocity profiles at various dimensionless axial distances were Obtained. The experimental results have provided important bases for the design project and operation of the...

    The multiple jet characteristics of a post combustion dual oxygen flow lance used for 15 t converter of Nanjing Iron and Steel Plant have been experimentally investigated by means of a multiple pressure scanivalve measurement system controlled by a microcomputer. The distributions of the jet velocity and the jet pressure, as well as jet isovelocity profiles at various dimensionless axial distances were Obtained. The experimental results have provided important bases for the design project and operation of the dual oxygen flow lance.

    运用微机控制的多点压力测量扫描阀自动测示系统,对南京钢铁厂15t复吹转炉二次燃烧双流道氧枪的射流特性进行了冷态实测研究,获得了射流速度、压力分布规律及等速度剖面图,为设计和操作提供了重要依据。

    Experimental study on a 1/2 model nozzle of dual oxygen flow lance for the 120t combinedblown converter has been carried out by use of a microcomputer-controlled scanivalve systemfor measuring multiple pressures.The distribution of multiple-jet velocity and pressure and itsisovelocity profile were obtained,and the effects of them on metallurgical process are discus-sed.The experimental results provide a theoretical basis for design and operation of the dualoxygen flow lance.

    用微机控制的多点压力快速扫描阀测量系统对攀钢120t 复吹转炉双流道氧枪喷头进行了半模实验研究,从获得的复射流速度、压力分布及等速度剖面等方面讨论了对冶金过程的影响,为双流道氧枪的设计和操作提供了理论依据。

     
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