查询词典 three-body problem

In order to study the numerical method to solve the viscous incompressible flow with free surface, the 3-D mathematical model for steady and unsteady hydrodynamic problem had been established and closed by k-εbuoyant turbulence model. The algebraic coordinate transformation method was used to fit the free surface, the Runge-Kutta method of three step and second precision was devised to simulate the time step. A high precision up-winding compact scheme was studied for the convection term, and the generalized conjugate residual method was set to solve the Poisson equation.

为了研究粘性不可压缩三维问题的数值求解方法，本文从基本的Navier-Stokes方程出发，采用代数拟合方法处理自由表面，用三级二阶Runge-Kutta方法对时间步进过程进行了模拟，并且对对流项的高精度迎风格式进行了研究，给出了求解压力Poisson方程的广义共轭剩余法，从而建立了能够模拟有自由表面的粘性不可压缩问题的定常、非定常三维水动力学模型，并采用k—ε浮湍流模型对其进行封闭。

Aiming at this problem, this paper focused on the subsidiary, according to resources exchange density of inter-network and outer-network, classify subsidiary into three types: production factory, operation center and local rootage.

针对这种问题，本文以跨国公司子公司为研究焦点，根据子公司与母公司集团及东道国当地组织的资源交易关系的差异，将子公司划分为"生产基地型"、"运营中心型"及"当地生根型"三种角色。

The research can solve the problem of the three-dimension cylinder design such as screw thread, gear wheel, and screw cap.

本研究主要用于解决三维柱面设计中经常会遇到螺纹的设计、齿轮的设计、螺旋槽的等设计问题。

The existence of triple positive solutions for second order multi-point boundary value problem is investigated by using Avery-Peterson fixed point theorem. Gives the sufficient conditions for the existence of three positive solutions of the problems.

研究一类二阶非线性微分方程的n点边值问题正解的存在性，应用Avery-Peterson不动点定理，给出这类边值问题至少存在3个正解的充分条件。

This study is primarily targeted at the control of excavation application in the county-township-utility agency, three-level government. Through empirical study relevant literature review and system development, this study first focuses on the entire official procedure period and then conducts analysis and research on five major aspects:regulation-construction-system-data-and update, A complete and improved system procedure is therefore proposed. With system control and auxiliaries, the long-time problem resulted from the sectionalism in each agency that leads to erroneous data and segregation is resolved.

本研究系以县政府—乡镇市公所—管线单位三级制政府申挖流程管制为主要目标，透过实证研究方法，从国内相关研究文献与系统发展进行课题分析，并首先以公务整体流程周期为主要观点，从法规-施工-系统-资料-更新五大重点进行整体深入分析与研究，提出完整的制度流程改善，并搭配系统管制与辅助，一次解决长久以来各单位本位主义造成管线资料错误与各行其事的问题。

The same respondent may also cause serial correlation problem in the panel data of three waves.

在三期的经纬数据中，相同受访者的不同期数据间可能有序列相关的问题。

In this thesis, transient problem of three dimensional dynamic interaotion is investigated for thick cylindrical shell in semi-infinite media under shock load. An analytical solution--boundary element coupling method is presented.

本文研究半无限介质中圆柱厚壳受冲击荷载作用，与介质三维动力相互作用的瞬态响应问题，提出一种解析解——边界元耦合方法。

This design divide sieve plate into three plates of different tilt angle to level surface, supplying with a shortcut to resolve the problem mentioned above.

本设计把筛面分成不同倾角的三段，为解决这个问题开辟了一条简捷的路子。

And the solutions of the three problems above are discussed:The solution to the simulcast interfering which is caused by the simulcast delay spread and the zero-beating is given in chapter four.Based on the well understanding of the principle of MS-I/H/0 in IPNP, the examples are given in chapter five on how to solve the problem of communication interruption between paging zones.Through the analyse of signal switching between Chengdu and Deyang, the synchronization error between FLEX frames, and the bug in the multi-frequency roaming principle are pointed out. And solutions are also recommended.

通过以上分析，文章探讨了对上述三个问题的解决：·对同播干扰问题，分别分析了时延差和零拍频所造成同播干扰的客观存在，探讨了系统设计和网络优化的基本方法；·对IPNP联网障碍，提出了在掌握IPNP对各PNCC作为输入局／归属局╱输出局的灵活定义、以及相关参数配置原理的基础上，分析联网障碍的思路；·对信号切换障碍，以成都和德阳两地的局部广域覆盖为例，分析了FLEX帧失步和FLEX多频漫游原理设计缺陷的客观存在，并探讨了相关的解决方法和建议。

It is shown that finally this problem turns to the estimation of the real joint eigenvalues of three real matrices and solve the joint eigenvalue estimation by a recently proposed simultaneous diagonalization algorithm.

通过同时对角化算法估计矩阵的联合特征值，获得了参数联合估计的强可辨识性，即允许信号参数在任何一维任意重复，并可以使估计参数实现自动配对。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。