蜗

The mechanism of production and influencing factor of vortex in meridian plane of volute are analyzed.

通过比较，分析了蜗壳子午截面涡流产生的机理及其影响因素。

The complex internal flow has made volute to be one of the component costing most loss.

蜗壳内部的流动现象十分复杂，是损失最大的元件之一。

The volute design methods of channel non-clogging pump were studied in detail.

全面系统研究了流道式无堵塞泵蜗壳的设计方法。

The internal flow pattern of volute casing is studied as a whole.

全面测量了蜗壳各断面的内部流动规律。

The numerical analysis to different operating modes shows the developing laws of secondary flow inside volute and impeller.

通过对不同工况的计算，揭示了叶轮和蜗壳内部的二次流现象及其发展规律。

The effects of geometry parameters of the impeller and volute for passing perfor-mance and efficiency were analyzed and the hydraulic design method was introduced.

分析了叶轮和蜗壳各几何参数对该泵的通过性能和效率的影响，并提出水力设计方法。

Results showed that: peripheral uniformity in non-axisymmetric volute was better than that in the axisymmetric one.

计算结果表明，非对称圆蜗壳在周向可以获得更加均匀的气流分布，整个流动过程中流动损失较小，对流动更为有利。

Pump pump body is the center of the structure, also called the volute or pump shell, and its type is also more.

水泵泵体是泵结构的中心，也叫蜗壳或泵壳，其型式也比较多。

Due to the interaction between the impeller and volute, the flow in double-channel pump displayed different characteristics at different time.

4考虑叶轮和蜗壳的动静干涉作用，不同时刻双流道泵的内部流动呈现不同特点。

The peak values of pressure fluctuation have not high frequency in the volute.

首次分析了非设计工况下蜗壳不同截面处压力脉动分布，随着流量的增大螺旋段的脉动幅度减小。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。