class: n.1.阶级;社会等级。2.学级；班级，年级，级，班；组；(有组织的)讲习班；〔美国〕同年毕业班；【军事】同年入伍士兵。3.(高低、优劣的)等级；类别。4.〔英大学〕(荣誉考试)优等；〔俚语〕高级，优秀；漂亮，优雅。5.【生物学】(分类学的)纲；【矿物】晶族。6.(一节)课。短语和例子the working class工人阶级。 No class today. 今天没课。
The closed property of conditional probability for - distribution class 分布类的条件概率封闭性
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The closure of an extensive subexponential distribution class under convolution roots 广义次指数族的卷积根的封闭性
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3 . the approach property and statistical approach property of discrete life distribution class and geometric distribution 第三、离散寿命分布类与几何分布贴近性和统计贴近性。
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This paper studies the deficit distribution at ruin by the distribution class of the claim - size distributions in a risk model with the markov chain stochastic interest 摘要应用损失赔付额分布函数的分布类的特性，在假设随机利率服从马尔可夫链的条件下，研究了风险模型中破产时刻赤字的分布函数和界值。
