查询词典 numerical analysis

The numerical analysis model of fiber coupler in the process offused biconical taper is constructed successfully. The numericalanalysis of fiber coupler in the process of fused FBT is accomplishedwith finite element software.

建立了光纤耦合器熔融拉锥有限元计算模型，实现了光纤拉锥流变全过程数值仿真，可预测分析器件制造参数对流变制造过程的影响。7。

Numerical simulations performed on other typical reaction-diffusion models confirm this analysis and suggest that our findings are robust and independent of the type of bifurcation, and even whether the system is close to or far from the bifurcation point.

这些结果，不但与具体的模型没有关系，而且也不依赖于系统所经历的Hopf分岔的类型，甚至系统是否远离分岔点。

Eckenwalder Lab, Department of Botany is primarily dedicated to research in woody plants including biosystematics, chemotaxonomy, numerical taxonomy and morphometrics, paleobotany, and cladistics, accommodation of hybridization in phylogenetic analysis, biogeography, systematics and reproductive biology of convolvulaceae.

植物学系Eckenwalder研究室主要致力于木本植物的研究，其研究领域包括生物分类学，化学分类学，数量分类学和形态测定，古植物学和遗传分类学，系统分析中杂交调节，生物地理学，滕本植物的分类学和生殖生物学等。

The development of computer and numerical analysis techniques makes it possible to simulate the complex phenomena in blast furnace.

计算机和数值计算技术的发展使得对高炉过程复杂现象的综合理论解析成为可能。

Numerical simulation research of strain localization phenomena can provide a new method for analysis of borehole failure,and for its forecast or control.

采用变形局部化的数值模拟研究可对井眼失效的机理分析、预测和控制提供新的思路

In performing the numerical analysis of unsteady seepage problem, it is necessary to calculate the integral on free surface boundary.

在三维非恒定渗流有限元计算中，不可避免地需计算自由面上的边界积分项。

Damage function is introduced in elastic and plastic modulus expression of the bounding surface formulation directly; then a bounding surface damage model for structural soft soil is developed; the complication induced by introducing damage parameter into the bounding surface equation is avoided and its numerical implementation is easy for the analysis of earth structures.

在边界面理论的弹塑性模量中直接引入损伤函数，建立结构性软土的边界面损伤模型，避免了在边界面方程中引入损伤变量带来的复杂性，易于在土工数值分析时采用。

In this paper, the build-up process of gas pressure in pressure chamber is studied by experiments and numerical analysis methods.

为此，本文应用试验和数值模拟的手段，研究了贮压室的压力积聚过程。

In this paper we combining connecting tunnel project of Subway Line 4 at Xidan-lingjing bystreet in Beijing. To aim at the difficulties of building large-span connecting tunnels in the fine sand layer, through roads and underground pipelines, construction nearby buildings and other project difficulties. Using theoretical analysis, numerical simulation, field tests and other research methods to comprehensive and systemic research the stratum deformation mechanism and process control techniques of shallow excavation method, and a series of results were obtained. Firstly, use the stochastic media theory to analyze the stratum deformation mechanism, concretely analyze the analytic equation of surface horizontal displacement and deformation which were caused by the excavation of single-hole and double-hole tunnel, and further discussion on ground settlement, vertical deformation, surface horizontal displacement and horizontal deformation. Analyzing the main influence factors of surface displacement, and combined with practical work to proof the theory which was applied to shallow buried single-hole tunnel in fine sand layer was scientific.

本文结合北京地铁四号线西单～灵境胡同渡线隧道工程，针对在粉细砂地层中修建大跨渡线隧道，下穿道路和地下管线，临近建筑物施工等工程难点，利用理论分析、数值模拟、和现场监测等多种研究手段，对浅埋暗挖隧道地层变位机理及控制技术，深入地进行全面和系统的研究，并取得以下成果：(1)引入随机介质理论，对地层变位机理进行了分析，具体分析了单、双孔隧道开挖引起的地表位移及变形的解析方程，并深入探讨了地表沉降、垂直变形、地表水平位移和水平变形的特点，同时分析了影响地表位移的主要因素，并结合工程实例，佐证该理论应用于粉细砂地层浅埋暗挖单孔地铁隧道的科学性。

Seventhly, a series of experiments and projects were carried out for verifying the previous theory. First, the cable force control test of reticulated shell-string structure in 2.2m×4.6m was conducted using the arithmetic presented in the paper. Second, the numerical analysis during construction, the adjustment of cable forces and the changing of cable of the Beijing North Railway Station were conducted.

为了进一步验证本文前几章有关预应力空间钢结构索张拉计算方法的正确性，本文进行了一系列的试验研究，包括：用提出的基于索原长反分析法对一2.2m×4.6m的小型张弦网壳进行索张拉成形的试验研究；对北京北站进行了模型施工过程分析、模型索张拉力的调整、换索试验研究。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。