文章提出了“无故障使用期”的理论模型并分析了其替代“保修期”承诺可能产生的正效应。

This paper has offered a theoretical model on Non-Failure Time and analyzed its possible positive effects after replacing Guarantee Period.

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由于进行优化设计，并对破碎机进行液压保护，其设备故障率大大降低，在正常使用情况下，设备无故障率将超过85%。

Due to the optimizing design and hydraulic protection of this crusher, the rate of trouble has been highly reduced, and the rate of non-trouble operation can be expected to exceed 85%.

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并将该结构应用于生产，经过长期使用无故障。

And the structure were used in the production, for a long trouble-free.

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