渗漏仿真程序。 按照给定概率模拟网状渗漏，并判断是否会发生渗漏，以不同颜色标示渗漏团-Leakage simulation program. In accordance with a given probability of analog network leakage, and to determine whether leakage, seepage groups marked in different colors

几何正态分布股价的概率密度函数，时间间隔从大变小，最终趋于无穷。-Geometric normal probability density function of stock price, the time interval from large to small, tends to infinity.

求故障树的 1）对偶树； 2）最小割级和最小路集； 3）假定底事件的故障概率已知，求顶事件发生的概率； 4）求底事件的结构重要度、概率重要度和关键重要度。-Seeking Fault Tree 1) dual tree 2) minimum cut level and minimal path sets 3) It is assumed that the end of the event of the failure probability known, find the p