In this paper calculation method of complex drawing piece on unfold size is given.

本文提出了复杂拉深件展开尺寸的计算方法。

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The industry hopes to resurrect the market by rolling out next-generation versions of stents, metal-mesh tubes about the size of an ink pen spring that unfold inside coronary arteries like a scaffold.

这种支架由金属网制成，管状，和水笔中的弹簧差不多大小，可以在冠状动脉内像支架一样展开。

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The industry hopes to resurrect the market by rolling out next-generation versions of stents, metal-mesh tubes about the size of an ink pen spring that unfold inside coronary arteries like a scaffold.

这种支架由金属网制成，管状，和水笔中的弹簧差不多大小，可以在冠状动脉内像支架一样展开。

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