介绍压力容器上实体元素的测量，测量坐标系的建立与转换，以设计基准评定制造精度。

Introducing method of measuring the points on the pressure vessel, establishing and transforming coordinate systems, estimating accuracy of manufacture with design standard.

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针对拟谱方法在极坐标下遇到的坐标奇异以及压力边界条件难处理等问题，提出了一种新的基于极坐标系下的拟谱方法。

A new pseudo-spectral method based on polar coordinate system was presented to resolve the difficulty in the coordinate singularity and treatment of pressure boundary conditions.

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通过建立局部坐标系，得到了裂缝性地层井壁发生失稳的弱面角度随井底压力变化的规律。

Then, the influence of bottom hole pressure on the failure range of weak plane is analyzed for bore holes in naturally fractured formation, with the help of the local coordinate system.

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