Safety life of crane was determined by its fatigue intensity of metal structure.
起重机的安全寿命取决于其金属结构的疲劳强度。
The consequence caused by crane's metal structure to lose efficacy is very serious.
门机金属结构的失效事故，后果往往非常严重。
The crane's metal structure intensity calculation and fatigue analysis is a fully complicated problem.
起重机金属结构的强度计算及疲劳分析是十分复杂的问题。
The crane's metal structure intensity calculation and fatigue analysis is a fully complicated problem.
起重机金属结构的强度计算及疲劳分析是十分复杂的问题。
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