Unlike hernias in men, which are far more common, those that afflict women are usually small and internal and rarely cause an obvious bulge.

和人们熟悉男性疝气不同，女性疝气通常体积较小，位于腹内，很少出现明显的突起。

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Based on the theory of plasticity, the variety rule of internal pressure and axial force in the process of thin tube bulge forming is studied.

采用塑性变形理论研究了薄壁管液压胀形过程中轴向载荷与内压力的变化情况。

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