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In fractural physical model experiment, after the analysis of the reflected P wave varying with observed azimuth at a certain offset in the simulated fractured media, we get the traveltime difference varying with observed azimuth. Also we can infer the azimuthal NMO velocity difference in fractured media.

在裂缝物理模型实验中，通过对模拟的平行排列的垂直裂缝介质中反射纵波的固定偏移距随观测方位变化的结果分析，得出随观测方位变化的旅行时的差异，可以推出同样存在随观测方位变化的动校正速度的差异。

The time varying and incommutable character of the coefficient matrix of periodically time varying linear systems are the bottleneck of the design for high precision direct integration methods .

周期时变线性系统系数矩阵的时变性与不可交换性是其精细积分算法设计中的瓶颈。

Contact model was established to quantitatively calculate the preparation of cement with different clinkers of varying strength by means of mathematical modeling of blending materials. Reactivity of clinkers from varying kiln system can be assessed by this model to produce cement.

采用混杂材料的数学模拟理论，建立了可以定量计算不同强度的熟料混合磨制水泥的接触点模型，应用该模型方法可以比较不同窑型熟料混合粉磨制备水泥时掺加熟料的活性效应。

The major content of this thesis are as follows:1 Performed FEM analysis before strengthening, and to find out the reason for the cracking and present a strengthening scheme;2 Performed nonlinear FEM analysis before and after strengthening, and to get the varying rule of the relative displacement between the on-site cast concrete side wall and that between the precast concrete arch and the floor, as well as the stress distribution of the gallery;3 Performed on-site observation experiments on the 7~th gallery, and to get the varying rule of the relative displacement between the on-site cast concrete side wall, as well as that between the precast concrete arch and the floor.4 The results of the computation were compared with those of experiments, which verified the effect of the strengthening.

本文的主要工作有： 1 对加固之前的廊道结构进行有限元计算，找出廊道底板开裂的原因，提出加固方案； 2 对加固前后廊道结构进行非线性有限元计算，得到加固前后廊道两现浇边墙相对位移、拱顶与底板相对位移随水库水位变化的规律和廊道结构的应力分布情况； 3 进行廊道加固前后现场观测试验，得到廊道两现浇边墙相对位移以及拱顶与底板相对位移随水库水位变化的规律； 4 对比分析加固前后现场观测试验与非线性有限元计算所得结果，论证加固方案的合理性，验证加固效果。

Straights of varying length and curves of varying degrees appear automatically.

长短不一的直轨和不同弧度的弯道会自动出现。

Under the premise of a rotor system satisfying the quasi steady-state condition, the influencing coefficient method based on the steady-state rotor balancing is extended to single-plane or multiple-plane gain-scheduling control of a rotor with slowly varying speed and all factors affecting the stability of a gain-scheduling control are analyzed. Numerical simulations verify that the gain scheduling control can effectively suppress imbalance-induced vibration of a rotor with slowly varying speed.

在转子系统满足准稳态条件前提下，延伸基于转子稳态平衡的影响系数法到慢变速转子单平面或多平面增益调度控制，分析了影响增益调度控制稳定性的诸因素，以数值模拟证实了增益调度控制能有效地抑制慢变速转子的不平衡振动。

The methods to simulate the wrapping of the wire rope on pulleys and the varying elasticity of wire may give a reference to the system dynamics study for the similar structures varying with time,such as drilling rig,oil well hoisting system.

该仿真模型中解决钢丝绳与滑轮间的缠绕和钢丝绳的刚度随时间变化的方法也可为研究钻机、矿井提升系统等类似的时变结构系统动力学时借鉴。

The vertical axis of the switch has a surface of positive first differential, comprised of splines drawn between points if varying distance from a datum plane, and has along the horizontal axis a surface of a positive first differential and negative second differential, comprised of a combination of splines drawn between points of varying distance from the datum plane.

开关的竖直轴线的表面具有正的一阶微分，其由多个在离基准平面不同距离的点之间绘制的样条构成，并且沿水平轴线具有一个表面，该表面具有正的一阶微分和负的二阶微分，其由一组在离基准平面不同距离的点之间绘制的样条构成。

In this paper the equations of the stability and shear, flexural vibration of the straight bars with varying cross-section and the equations of motion of one degree of freedom systems with varying parameters are written as a unified self-adjoint differential equation of the second order eq.

本文将变截面杆的稳定与剪切、弯曲振动方程，以及具有变参数的单自由度体系的振动方程等均化为统一的二阶自共轭微分方程：并对，且的情形，将二阶自共轭方程化为贝塞尔方程。

In view of the study, there were large seasonal varying value of water resource carrying capacity and high probability of water scarce conjunctures during the low water season in the urban districts of Nanming and Yunyan, while there were small seasonal varying value of water resource carrying capacity and low probability of water scarce conjunctures during the low water season in the districts of Xifeng and Xiuwen county.

研究认为云岩、南明两城区水资源承载力的季节变化较大，在枯水季节容易发生水资源超载而引发的水危机；而修文、息烽等县水资源承载状态的季节性变化较小，在枯水季节的超载程度较轻。

Vishnu entered a dark fourth dimensional dream that did not support his field or continued life.

毗瑟挐进入了一个第四密度的黑暗梦想，那里并不支持他的能量场或继续生命。

Leaders and decision-making persons use it to collect the data, including the information of unit work, handing in fee, oweing fee, prepaying fee,changing and afterpaying and account transfering of joining-insurance employee, and account paying of all kinds of insurances from hospitalization insurance institutions.The collected data is picked up, organized, switched and showed to user.

该子系统主要面向各级领导、决策分析人员；从各个医疗保险经办机构和定点医疗机构采集数据，包括在各个医疗保险经办机构处理的单位办公信息，单位缴费、欠费、预缴费信息，参保职工变更信息，参保职工增减变动信息，参保职工补缴信息，参保职工帐户划拨信息：包括各定点医疗机构处理的各险种帐户支出信息，各险种的统筹金支付信息等；将采集的数据提取，组织和转换，然后展示给用户。