Different geometry of stay vanes applied to reduce loss is discussed in the paper, so as to compensate lack of spiralcasing and improve hydraulic efficiency.
This paper summarizes soft development and technology of spreading of elliptical spiralcasing based on approximate elliptical spiralcasing (major and small circle casing).
主要介绍椭圆蜗壳按近似椭圆蜗壳(即大小圆蜗壳)展开的软件开发与制作工艺过程。
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There exists a spiral clearance space in the API round thread casing joint which is effected by the thread tolerance ranges.