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This paper presents a method to manufacture pipe elbows by hydro - bulging a tubular single - curvature polyhedron.
介绍了一种利用管状单曲率多面壳体液压胀形制造薄壁管道弯头工艺方法.
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A single curvature shell of an inscribed ellipsoid was used as the experimental shell.
实验壳体采用单曲率椭球内接多面壳体.
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