The intima is the innermost layer of the blood vessel wall.

内膜是血管壁的最内层。

Based on the conceptions of zero stress state and opening angle proposed by earlier researchers, stress distribution in blood vessel wall with inner pressure was investigated numerically.

利用零应力状态和张开角的概念，推导受内压的血管壁的内力分布的解析解，并对具体的实例进行计算分析。