The failure curve of the horizontal machine center during the forepart fault is degressive, the internal time is Weibull distribution.
卧式加工中心在早期故障期时，故障率曲线为递减型，间隔时间服从威布尔分布。
2
We also obtain the distributions of failure number which server takes in a generalized service time, and show that it follows a modified geometric distribution.
我们也得到在广义服务时间内服务台发生故障次数的分布，证明它服从一个修正的几何分布。
3
The repair facility has an exponential failuredistribution and a general replacement time distribution.