In classical reliability theory, the lifetimes of systems and components have been assumed to be random variables.
在传统的系统可靠性的研究中，系统和各部件的寿命都看作随机变量。
The paper gives a brief introduction to these three theories: classical test theory, generalizability theory and item response theory, and discusses in detail their different views of reliability.
本文分别对这三种理论即经典测验理论、可概括性理论和项目反应理论作了简要介绍，着重分析这三种理论的信度观。
So with the transition from classical error theory to modern error theory, people gradually accept that the reliability standard of the result of measurement is expressed by measurement uncertainty.
随着经典误差理论向现代误差理论变迁，人们逐渐接受采用测量不确定度来表示测量结果的可靠性程度。
So with the transition from classical error theory to modern error theory, people gradually accept that the reliability standard of the result of measurement is expressed by measurement uncertainty.
随着经典误差理论向现代误差理论变迁，人们逐渐接受采用测量不确定度来表示测量结果的可靠性程度。
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