求翻译：摘要：针对碟形弹簧的疲劳寿命受尺寸参数等不确定性因素影响较大的问题，提出采用分析性稳健设计方法，对移动回转压头框式液压机压头的锁紧碟簧的疲劳寿命与设计变量及其偏差的关系进行研究，从而合理的设计其疲劳寿命。建立了碟簧疲劳寿命稳健性分析模型，并进行了稳健优化，提高了设计结果的经济性和可靠性。是什么意思？

Abstract: The disc spring fatigue life by the size of the parameters uncertainties affecting the larger issues, about the use of analytical methods of robust design for mobile hydraulic rotary machine head box head of the locking disc spring fatigue life and Design variables and their bias to study

Summary: against dish spring fatigue life, such as the size parameter uncertainties affecting larger issues, proposed the use of a robust design methods, and analysis of mobile swivel head box-type hydraulic head locking disc lifetime of fatigue life and design variables and their bias into the rela

Abstract: In view of the small dish shape spring fatigue life size parameter and so on uncertainty the factor influence major problems, was proposed uses the analytical steady design method, to moves the rotation discharge head frame type hydraulic press discharge head the locking small dish reed fa

Summary: for disc spring fatigue life under the influence of uncertainty factors such as size parameters of larger issues, has proposed a robust analytical design method, moving head frame type hydraulic rotary machine head's locking design of disk spring fatigue life and study the relationship betw

Summary: for disc spring fatigue life under the influence of uncertainty factors such as size parameters of larger issues, has proposed a robust analytical design method, moving head frame type hydraulic rotary machine head's locking design of disk spring fatigue life and study the relationship betw