Series analysis showed that the critical buckling pressure of cylinder under external pressure could be obviously decrea系列计算表明，外压圆筒体屈曲临界压力值会随筒体椭圆度的增加而明显降低。
The data, which was obtained by calculation, was imitated and the experiential formula for the relation of the max exter并对计算分析取得的数据进行拟和得到了扁管在直边段和圆弧半径的不同比值条件下能承受最大外压力的关系及经验公式。