对井架进行了稳定性、静强度和疲劳强度设计计算。
Stability, static loads and fatigue life on a derrick are calculated in designing.
通过两座部分斜拉桥拉索的疲劳试验结果，验证了本文介绍的疲劳强度设计方法的正确性。
At last, correctness of the design methods about fatigue strength via the fatigue experimental results of two partially cable-stayed Bridges are verified.
在不增加气瓶总质量的情况下，得到了提高封头疲劳强度的设计方法。
Design method to enhance fatigue strength of a dome is given without increase of total cylinder mass.
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