The reliability distribution of ventilation system is an important index when optimizing the reliability design of mine ventilation system and insuring production safety and routine management.
通风系统可靠性分配是优化矿井通风系统可靠性设计、保障安全生产和日常管理的一项重要指标。
With using target reliability index, this method is easy to use, and harmonizes with the current reliability design standard.
这一方法简单易行，采用目标可靠度指标，与现行的可靠度设计统一标准方法协调。
Thus a kind of computer aided optimum tolerance design model is built, by the reliability index of second moment based on the Dimension chain theory.
本文以尺寸链理论为基础，通过对二阶矩可靠性指标的应用到装配尺寸链的研究，建立计算机辅助公差优化设计的尺寸模型。
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