When the distribution of life, delayed repair and imperfect repair time are all exponential, Markovrenewalprocess for educing the availability is presented.
并在寿命、修理延迟和维修时间均服从指数分布的情况下，用马尔可夫更新过程理论导出了系统的可用度。
2
Applying the Markovrenewal theorem, it is shown that certain reasonable conditions of the QBD process lead to the geometric decay of the tail probabilities as the level goes to infinity.