数值方法

Meanwhile, the paper also quantitatively studied the response mode of the soil moisture, crop, trees and grass under climate change conditions with the statistical and numerical models.

本研究选择黄淮海流域、新疆、小兴安岭和内蒙古锡林浩特分别作为农田、森林、草原典型生态研究区，利用较长时间序列的气候资料、遥感数据及其他辅助资料，运用趋势、相关、EOF、突变检验、小波分析及数值模拟等多种方法，在分析研究不同生态研究区气候变化区域特征的基础上，较为系统全面地开展了我国北方典型生态区气候变化对农田生态、森林生态和草原生态典型和敏感生态环境指标的影响研究，包括气候变化对农田土壤水分、农作物发育期和产量的影响；气候变化木本植物和鸟类物候的影响；气候变化对植被NDVI、林木生产力和森林生态环境质量的影响；气候变化对草原土壤水分和牧草产量的影响，同时，通过统计模型和数值模型定量研究了气候变化背景下的土壤水分、作物、林木和牧草响应模式。

Aiming at the structure and refractive-index profile of wide-angle cross waveguide, the optical field distribution has been calculated by the method.

数值计算对交叉波导的设计和优化有着重要的意义，而选择正确的计算方法是交叉波导数值计算的关键。

Two-phases flow in cyclone separator was simulated by numerical method in this paper.

本文采用数值模拟方法对旋风分离器内两相流动进行了数值仿真。

Therefore, the hybrid method was adopted to determine the equivalent material properties. In this paper, the modal testing and numerical analysis were applied to obtain the Frequency Response Function and to calculate the equivalent spring constant and damping ratio of the suspension.

因此本文针对汽车悬吊部分，先以模态试验法与数值分析方法，将悬吊部分以线性弹簧及阻尼来模拟，并使用混合法，结合实验与数值之结果进行参数调整，在此是以FRF Base 来实施参数调整，确立悬吊系统的等效弹簧系数与阻尼系数。

The numerical simulation result is competent, and can provide important reference for the design of die and drawing technology. It is showed that finite-element method can save much time and cost. It is a useful tool for engineering analysis.

模拟结果表明，有限元数值模拟方法可以节省大量的费用和时间，能够为拉深工艺设计及模具设计提供重要的参考依据，不失为工程分析的一种有效数值模拟工具。

Base on the analysis of the grating linear displacement measurement theory,t he measure errors especially the subdivision error of the grating scale,this paper focuses on the theory of switch and merge of dual grating scales'signals,builds the design criteria of high speed high precision displacement measurement by using dual grating sales,designs the switch picking reference with high precision and fast switch and merge method,analyses the errors brought in by switch and merge of the duals grating scales.

针对光栅尺的电子细分信号具有细分误差的特性，本文提出了对莫尔条纹信号不细分的方法以提高双光栅尺信号切换合成值的精度。经过对双光栅计数切换基准、切换与合成特征和规律的探讨，本文设计了实现双光栅尺双重测量、计数值切换合成法的硬件电路，主要通过可编程芯片FPGA，设计了双光栅尺信号处理的各电路模块，如双光栅尺信号四倍频辨向模块、速度判断模块、切换模块、计数值合成处理模块。

Springback character of rubber forming was studied by numerical method and springback compensation of rib flanging was analyzed.

基于数值模拟方法模拟了橡皮成形过程的回弹规律，对翼肋零件的翻边回弹进行了数值模拟，并通过试验进行了比较。

Applications of face-fired boilers are not so many on our country's industry, So the researches on it, especially on high-duty boilers (for example 330MW), are very limited. And further study is needed to make up for domestic vacancy about this. Author of this paper has done some researches on 330MW boiler both in theory and experiments by applying Computer Aided Test principles. Numerical simulation is dominating part of CAT, also the core of this paper.

对冲燃烧锅炉在我国的应用并不是很多，所以对它所进行的研究极为有限，特别是对于较大容量(如330MW)的机组，相应的试验和数值计算都很少，很多的问题仍等待进一步的研究，本文正是为了填补国内的空白，从理论和试验的角度，运用计算机辅助优化数值试验原理和方法，对330MW对冲锅炉进行研究。

The reason why ANSYS software is used in the paper is directly to build up the best calculation method, avert from unnecessary numeribal problem and make it think easily to design modelings and mechanical problems.

本文之所以利用ANSYS软件的意义就在于可以建立最佳的数值计算方法，避开不必要的数值计算问题，将研究思路直接建立在模型设计和力学机制上。

In the background of numerical simulation for the transonic flow about advanced transport aircraft with wing-mounted nacelles, great efforts have been made in this thesis for the improvement of the grid generation technique and the numerical methods for solving the Euler equations.

本文以民用飞机复杂外形跨音速绕流数值模拟及气动力分析为应用背景，在复杂空气动力外形网格生成技术，Euler方程数值求解方法的改进。。。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。