spiral casing meaning in English

螺形
螺状车室
蜗壳
蜗形壳

Technological guide for assembly and welding of metal spiral case of turbine
水轮机金属蜗壳安装焊接.工艺导则
Three - dimensional nonlinear analysis of complete bearing spiral case without cushion
完全联合承载蜗壳三维非线性分析
Influence of changing temperature on reinforcing bars of spiral casing structure in a hydropower station
温度变化对水电站蜗壳结构配筋的影响
According to the results of analysis , the shape of the spiral case and stay vanes were improved to reduce the hydraulic losses
根据解析结果，对涡壳和固定导叶进行了改进以减少水力损失。
This paper deals with a lump - sum flow analysis of a spiral case , stay ring and vaneless annular walls for a small francis turbine by the latest cfd code
本文对常用的小型混流式水轮机涡壳、座环和无导叶环壁面内流动状况用最新的cfd技术进行了整体数值解析。

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