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笔者认为《真空设计手册》及《ＰＯＴ Ｅ ＫＯＭＩＩＰＥＣＣＯＰ 》两书中给出的叶片端部圆弧半径计算式只是两个近似式，本文给予数学证明，并推导出叶片端部圆弧半径的精确计算式，取得了理论与实践一致的结果。
The author thinks that the calculation formula of the arc radius at the blade end given in the “Vacuum Design Handbook” and the “POT E KOMIIPECCOP” is only two approximations. This article gives the mathematical proof and deduces the accurate calculation of the arc radius on the blade end Type, made consistent with the theory and practice results.