The result shows that even without strength degeneration, the reliability and failure rate of components decrease with time.
研究表明，即使强度不退化，零件的可靠度和失效率也会随时间逐渐降低；
On condition that the probability characteristics of load and strength are known, the reliability and failure rate of components at any time can be calculated by the model proposed.
在载荷和强度分布已知的情况下，可直接运用本文模型计算零件在任意时刻的可靠度和失效率。
Failure rate data of heating network components of Beijing and Shenyang could be taken as a reference for reliability research of heating networks in China.
北京和沈阳热网元件故障率可作为我国热网可靠性研究的参考数据。
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