According to the target of DFR and the concept of RE, the DFR method based on RE is put forward.
根据产品回收设计的目标和回收元的概念，提出了基于回收元的产品回收设计方法。
Fatigue analysis for civil aircraft fuselage typical truss joint in serving environment was discussed, in which detail fatigue rating (DFR) method in corrosive environment was used.
采用腐蚀条件下的细节疲劳额定值(DFR)方法对民机机身典型长桁机加接头结构进行了综合环境下的疲劳分析。
The research work of this thesis intends to study the DFR theory and test method with its application in the running frame of low-speed magnet driven aerotrain.
本文拟研究DFR理论与DFR试验方法以及该方法在低速磁浮列车走行机构主要构件的疲劳可靠性寿命分析中的应用技术。
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