The definition and quality of conditional probability of fuzzy events were given. The total probability formula of fuzzy events in general division of samplespace was also given.
给出f事件的条件概率定义和性质，并在基本空间普通划分下给出f事件的全概率公式。
2
During the statistical process of density, the probability density distribution of the rock mass structural plane in samplespace is assumed as normal distribution.