通过理论分析与模型试验，从时均压力、脉动压力、空化数等方面得出缓坡与陡坡过渡衔接部位采用抛物线型式较圆弧型式好的结论。

The parabolic shape is better than the arc shape through comparing time averaged pressures, fluctuating pressures and cavitations by theoretical analysis and hydraulic model experiments.

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因此，研究过渡段内的水流流态对于选择合理的过渡段型式与尺寸，具有重要的意义。

Therefore, it is of great significance to research the water state of the transition section for selecting a reasonable type and size for it.

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分析潜艇耐压船体过渡段结构型式，提出了双圆弧式过渡段，并对其结构强度进行计算研究。

Fourthly, by analyzing the transition structure models of cylindrical hull, the double arcs transition model is put forward, and the calculation results indicate that the new transition model is well.

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