If the failure is defined as the final fracture of a component, then both S-N curves and crack growth rate curves reflect the fundamental material behavior under fatigue loading.

如果都把一个构件的最终断裂作为疲劳破坏的定义，则S - N曲线和裂纹扩展率曲线均是反映金属在疲劳载荷作用下的基本材料特性。

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Reliability of a non-repairable component, failure rate of a repairable component, reliability of a complex mechanical system as well as maintainability and availability are briefly discussed.

文中讨论了不予修理的部件的可靠性、可修理部件的损坏率以及复杂系统的可靠性，此外还讨论了可维修度和有效度。

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Monte Carlo method is used to simulate the failure rate curve of repairable system, the sample method of the component is discussed.

采用蒙特卡洛方法对可维修系统的故障率进行模拟，讨论了元件的抽样方法。

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