查询词典 third boundary condition

In order to fit the terrain condition, this dissertation uses Mathieu function and modified Mathieu function during the process of wave function expansion, also tries two different methods in small elliptical hill and high elliptical hill to overcome the barrier of composite boundary condition.

展开时为了克服混合边界条件带来的影响，在扁平椭圆地形和高陡椭圆地形中分别尝试了现有的两种方法并分析了其中存在的题目。

First, response model in time domain of pile under the transient state of stimulated vibration is reduced according to damping wave equation, initial condition and boundary condition.

首先，从桩-土系统共同作用的阻尼波动方程入手，结合初始条件、边界条件，推导了完整桩瞬态激振下的时域响应模型。

The underwater enclosure was built along the boundary of target water body and the lake bottom sludge was filled into the enclosure by twisting-suction dredging ship according to designing elevation for the purpose of formation of slope riffle, which will improve natural condition of littoral zone of lake, and create favorable habitation condition for ecological restoration in littoral zone of lake.

文章介绍最新开发的湖滨陡坎沿岸水域基底修复技术，主要采用人工方法在需要进行大型水生植物群落恢复的湖滨陡坎沿岸的水域实施基底修复工程措施，在目标水域边界构筑水下围埝，采用绞吸式挖泥船将疏浚的湖泥按设计高程要求吹填至基底修复工程区内，形成缓坡浅滩，改善湖泊沿岸带自然条件，为湖泊沿岸带生态修复创造良好的生境条件。

The uniqueness of solution of field point, inside a convex region due to singular source with kernel function decreasing with distance increasing, outside-region-distribution such that the boundary condition expressed by the response of the source is satisfied, is proved by using the condition of kernel function decreasing with distance increasing and an integral inequality.

应用奇源解的核函数沿距离递减的条件和积分不等式，可证这类奇源在凸域外分布只要满足以它产生的响应来表达的边界条件时，所引起相应的域内场点解是唯一的。

The paper studies fault diagnosis technology based on fruticose gas pipe network which is universal in small towns,and gives a particular description of domestic and foreign gas pipe network fault diagnosis technique based on hardware and software currently. The author uses graph theory to build up hydraulic analysis model of natural gas network and presents its solution methods. Besides, the author works out the relation between gas pipe pressure and flux in unsteady condition of fluid flow according to pressure boundary condition and differential equation group, and puts forward fault diagnosis methods and steps of the fruticose natural gas pipe network of middle pressure based on the simplification of this relation.

本文针对小城镇比较普遍的枝状天然气分配管网进行故障诊断技术研究，详细叙述了目前国内外基于硬件和软件的燃气管网故障诊断技术，利用图论理论建立了天然气管网水力分析模型并叙述了其求解方法，根据燃气管内流动的微分方程组和压力边界条件求解出非稳定流动时燃气管道压力和流量的关系，并在对此关系进行简化的基础上提出了基于中压枝状天然气管网的故障诊断方法和步骤。

The model parameters include boundary condition, initial condition, hydrological and geomorphological parameters and the other parameter for controlling the model simulation process.

在不规则无结构网格中，在洪水模拟计算时要用到的网格与边的关系、网格与结点的关系及边与结点的关系必须建立；④模型参数的确定。

In the condition that fault infeed from both terminal is given, the fault point can be found out according to the boundary condition of fault point.

在已知线路任意点的左右侧注入电流的情况下，可以根据故障点边界条件搜索出故障点。

The author disserted the principle and range of intercepting the local model, the methods of applying force and displacement boundary condition, the principle and method of selecting likely most unfavorable live load condition for the joints mechanical states.

论述了结点的截取原则和范围，力边界条件、位移边界条件的施加方法，结点受力状态可能最不利活载工况的选取原则和选取方法。

The results showed the modelling es-tablished and its condition for determination and solving could be used as predic-tion and simulation of the flucturation of soil water in the field under subdrainagecondition,the soil water status in the winter wheat and barley field could be ob-tained at different falling rates of underground water table under any meterologi-cal boundary condition.

结果表明，所建立的模型和定解条件能较好地拟合排降条件下田间土壤水分的变化，可以求获一定外界气象条件下，不同地下水降落速度时，麦田水分变化状况。

The technique of boundary-fitted coordinate system is used to overcome the difficulties resulting from the complicated shapes of natural river boundaries;the method of alternating direction implicit finite difference scheme is used to solve the partial differential equations in the transformed plane;and the technique of moving boundary is used to deal with the river bed exposed to water surface.

用适体坐标技术克服天然河道复杂的几何边界给有限差分法所带来的困难；用交替方向隐式有限差分格式求解变换平面上的偏微分方程；用动边界技术处理河床的淹露。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。