叶轮

The screw centrifugal pump's performance of speed control was studied in detail.

首次给出非规则叶轮曲面方程的具体形式与参数的确定方法。

The emphases and difficulty of the article is the design of three dimensional screw impeller owned by screw centrifugal pump.

本文的设计重点和难点是螺旋离心泵特有的是三维螺旋叶轮的设计。

The main products of petroleum machinery Desanding except for accessory mud, sand pump shell, frame, impeller, pulley, machine tools and accessories such as bed.

主要产品为石油机械除砂器除泥器配件、砂泵壳、支架、叶轮、皮带轮，机床床身及附件等。

One radial vibration probe positioned in " Y " plane for each rotor after impeller. For vibration display, alarm and shutdown, function wired to control panel.

每级叶轮后的转子轴处都装有一径向振动探头，线接至控制柜，为每级振动的显示、报警和停机。

In order to reduce the fan system noise of airconditioner outdoor machine, the basic theory and control methods of the aerodynamic noise of turbines have been studied in detail.

本研究以降低空调器室外风机噪声为目标，从气动噪声机理、降噪措施对叶轮机构气动噪声进行了详细研究，并在研究中取得了实际的降噪效果。

Tetrafluoroethylene pads, packing seals, scraping the oil ring, the safety valve, pump , Impeller and other products, and to accept non-standard products customized!

垫、密封填料、刮油环、安全阀、油泵、叶轮等产品，并接受非标产品定做！

D numerical simulation was made using the general aerodynamic program GAP10 developed by authors to analyze the flow fields of the reaction turbine rotor blade row with seal s, focusing on the internal flow structure inside seal s.

本文采用作者发展的叶轮机械通用计算程序GAP10对带围带汽封和隔板汽封结构的动叶片排流场进行了三维数值模拟，并着重对汽封结构内部流动结构进行了分析。

The Submersible Impeller-driven Pump is designed for installations requiring high head pressure, such as fountains and waterfalls.

水泵潜水叶轮推动水泵是为要求高速前进压力的设备而设计的，例如喷泉和瀑布。

Phase-lagged cyclic boundary condition is implemented by a novel method in conjunction with the developed sliding interface technique to accurately simulate the arbitrary pitch ratio rotor/stator interaction without any modifications of the physics of the problem. It's for the first time to compose the computational area into one structured grids including both rotor/stator of centrifugal or axial turbomachinery with arbitrary pitch ratio. This method can eliminate the iteration of boundary conditions on the sliding interface and calculate the unsteady flow within rotor and stator simultaneously.

为了能够在较小的计算区域内不改变叶型而真实地反映出任意栅距比时的内部非定常流场，并避免近似仍采用相位后滞周期性条件，结合本文发展的网格技术，给出了一种新的实施方法，首次将动、静叶片数不等的离心式/轴流式叶轮机械转子、静子计算区域组合在一套结构化计算网格中，动/静叶排间的滑移界面完全按内场处理，避免了每一时层内，滑移界面处边界条件的迭代计算；并保证了每一时层，滑移界面处流动参数的守恒特性。

The compression process difference between real and perfect gas model is also compared in the case of equal specific volume ratio .

使用实际气体模型对R134a在半开式离心压缩机叶轮内部三维湍流进行了数值计算，比较了比容比相等情况下实际及理想气体模型对压缩过程的差异。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。