偶然失效

1
random failure
2.5 偶然失效（random failure）计量器具由于偶然因素发生的失效。2.6 耗损失效（wear-out failure）计量器具由于老化、磨损、损耗、疲劳等因素引起的失效。
2
accidental failure
... accidental exposure 事故照射 accidental failure 偶然失效；随机故障 accidental fluctuation 意外变动 ...

1
现场使用的电机基本运行在偶然失效阶段，因而其失效率近似为一常数。
The motor on the spot is in operation in the random failure period and therefore its failure rate is approximately a constant.
2
它们预示着使我们的体系结构、我们的代码、我们的操作手册失效，最糟糕的是，使我们将偶然的知识替换为深入技能的能力失效。
They threaten to invalidate our architecture, our code, our operations manuals and, worst of all, our ability to substitute casual knowledge for deep skills.
3
而油罐进油管设计欠合理则是造成偶然性失效的原因。
The reason for the accidental failure lies in the unduely designed inlet pipe to the tank.

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