Taper section and custom section beams are widely adopted in the process of model set-up, which is a feature of this paper.

在建立有限元模型中，广泛采用变截面梁和异型梁是本模型的一大特色。

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The article introduces the structure feature and working principle of a new type Reduction Sleeves with 7:24 taper and indicates its use value and application prospect.

介绍一种新型7：24锥柄用过渡套的结构特点和工作原理，并提出了其使用价值和应用前景。

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