The thesis considers 3 kinds of imperfection forms: the welded-joint imperfection, the consistent mode imperfection and the random imperfection.
全文对筒仓引入了3种缺陷，即周圈焊缝凹陷缺陷、一致模态缺陷和随机缺陷。
The main aim of this paper is to study the joint distributions of some actuarial random vectors in the continuous-time compound binomial model.
本文主要研究了连续时间复合二项模型的包含破产时间在内的多维精算量的联合分布。
The bore sequence of every working face is random to the multi joint rock drilling manipulator, so the bore task planning is very complicated.
多关节凿岩机械手在工作时，完成的是一个在一定工作面上随机的钻孔孔序任务，其孔序规划相当复杂。
Making use of the joint distribution matrix of discrete random variables, we get a kind of judgement method about the independence of discrete random variables, give its application by example.
利用离散型随机变量的联合分布矩阵，得到了离散型随机变量独立性的一种判别方法，并用实例给出了一定的应用。
The curves generated by random fractal method simulating natural joint profiles in analysis will bring great convenience in researches.
用随机分形产生的曲线代替自然节理剖面进行分析，会给研究人员带来极大的方便。
Many random factors were taken into account when calculating the block reliability, such as angles of joint face, binding force, friction coefficient, the rock density, etc.
在分析块体的可靠度时考虑了结构面的产状、粘结系数、摩擦系数、岩体的容重等多个随机因素。
A necessary and sufficient condition for discriminating the independence of random variables directly from joint distribution instead of marginal probability distribution has been established.
本文建立了不需要求边缘概率分布而直接从联合分布判别独立性的一个充要条件。
Moreover some random factors of orientation and friction Angle of structural surface are considered during the stability analysis of joint rock mass.
在节理岩体的稳定性分析中，考虑了各组结构面产状和摩擦角的随机性。
The utility model can carry on lateral and longitudinal joint sewing processing according to users' requirements, and the utility model can attain the purpose of random widening and lengthening.
还可以根据用户的需要作横向、纵向的接头缝纫加工，使其达到任意加宽、加长的目的。
Thermal fatigue Random variable Probabilistic analysis Solder joint Lognormal distribution;
热疲劳；随机变量；概率分析；焊点；对数正态分布；
Thermal fatigue Random variable Probabilistic analysis Solder joint Lognormal distribution;
热疲劳；随机变量；概率分析；焊点；对数正态分布；
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