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1·The variational analysis of spiral case and stay ring's strength.

蜗壳座环强度的变量化分析。

2·Backwater hole and then right to the water flow convergence, the flow along the spiral case.

然后与右回水孔流来的水汇合，顺着蜗壳流动。

3·The ellipse section spiral case can give excellent hydraulic performance by optimizing design.

通过优化设计，椭圆型蜗壳可获得优异的水力性能。

4·Due to the high water head of the GHS, the design unit put forward a suggestion of using the pre stressed reinforced concrete spiral case.

高坝洲水电站由于设计水头较高，设计单位建议采用预应力钢筋混凝土蜗壳。

5·Heituhu formation is gray and gray-black silty clay with limnological facies in early and middle period of Holocene, and bearing lots of spiral case;

黑土湖组为全新世早—中期湖沼相沉积的灰—灰黑色粘土类粉砂质粘土，含大量淡水螺蚌介壳；

6·The present work considers the spiral case as branch-off pipe system that diverts part of the flow consecutively as it goes around the periphery of the runner.

本文将蜗壳看作沿转轮四周连续分流的分叉管系统，应用水力瞬变中的叉管理论推出一种能计及蜗壳各断面水锤效应，并使仿真计算更接近实际情况的新方法。

7·At present, each sectionalization of large-scale spiral case is produced by NC cutting according to the outstretched plane of the curve of the sectionalization.

目前，大型水轮机金属焊接蜗壳各分节大多采用按各分节平面展开线轮廓进行数控切割加工。

8·Through analysis, we consider that the spiral case of left powerhouse units works normally, and that the stress and deformation are within the range of allowable design.

通过分析认为左厂房机组蜗壳工作性态正常，应力和变形均在设计允许范围内。

9·In addition, spiral case design method by layers and blocks, concrete temperature control, construction quality control, additional anti-crack reinforcement bar disposal, etc.

并结合工程实际介绍了分层分块设计、混凝土温控、施工质量控制、增设温度筋和抗裂筋等技术措施。

10·The structure of preloading filling spiral case is becoming larger and more complex correspondingly, and it is widely used in large hydropower house because of its reliability.

在已建的大型电站中，充水保压蜗壳结构以其独特的结构优势和可靠性得到了广泛的应用。

蜗壳

1·Backwater hole and then right to the water flow convergence, the flow along the spiral case.

然后与右回水孔流来的水汇合，顺着蜗壳流动。

2·Due to the high water head of the GHS, the design unit put forward a suggestion of using the pre stressed reinforced concrete spiral case.

高坝洲水电站由于设计水头较高，设计单位建议采用预应力钢筋混凝土蜗壳。

3·The variational analysis of spiral case and stay ring's strength.

蜗壳座环强度的变量化分析。