【摘要】 系统的可用性问题是工程界非常关心的问题,为分析方便起见,通常假定系统处于全新或可修到全新状态,但实际上工程通常处在磨损状态下(即退化过程)工作,本文用概率这一工具对此状态的可用性问题进行了探讨。更多还原

【Abstract】 Usability issue in course is highly concerned in engineering. System is assumed in the new state for analyzing easily. But a project is usually in course of degeneration. This paper has discussed the usability issue by probability.更多还原