软件可靠性预测模型是定量评估和预测软件可靠性的基础。
Software reliability prediction model is the base to evaluate and predict software reliability.
软件可靠性作为衡量软件质量的重要特性，其定量评估和预测已成为人们关注和研究的焦点。
The researches have already focused on the quantitative evaluation and forecast of the software reliability, which is the important criterion in checking the software qualities.
通过建模评估，得出了联锁软件可靠性水平的定量分析结果，为计算机联锁系统开发的管理和决策提供了科学依据。
The paper expounds how to communicate between PLC , the collection drive layer, and PC, the interlocking logic layer in the computer interlocking system.
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