Design method to enhance fatiguestrength of a dome is given without increase of total cylinder mass.
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。
2
Fatiguestrength analyses, prediction of fatigue life and assessment about fatigue behaviors have important engineering background and particular theoretic value.
疲劳强度分析、疲劳寿命预报和疲劳行为的评估具有重要的工程背景和理论研究价值。
3
We must improve fatiguestrength of elements in saw chain for prolonging lifetime of saw chain.