Fatigue life (Nf). The total number of stress cycles that will cause a fatigue failure at some specified stress amplitude.
疲劳寿命(Nf)：在某一指定应力幅值下，引起疲劳失效的应力循环总数。
Fatigue life (Nf). The total number of stress cycles that will cause a fatigue failure at some specified stress amplitude.
疲劳寿命(Nf)：在某一指定应力幅值下，引起疲劳失效的应力循环总数。
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