从...出发

Based on Huygens principle,the translation of transmission light relative to incident light is analyzed in theory as the incident light parallels to the normal Nicol prism's long side,according to the propagation characteristics of e light in crystals.The beam translation of six species of improved Nicol prism are calculated.

从惠更斯原理出发，根据e光在晶体中的传播特性，从理论上详细分析了光线平行于常规尼科耳棱镜长边入射时透射光相对入射光的平移，并给出了6种改进形式尼科耳棱镜的光束平移。

This model is different from the structural dynamics model in a non-inertial reference frame with large overall motions known.

本文从力学基本原理出发，分析了刚柔耦合零次近似理论失效的原因，深入研究了有大范围运动的柔性体变形场的描述，建立了刚柔耦合一次近似的动力学模型；然后利用上述模型，从非惯性系下的结构动力学问题和大范围运动为自由的刚柔耦合动力学问题这两个层次上进行了刚柔耦合动力学建模理论与性态的研究，采用理论和实验相结合的手段来检验了一次近似刚柔耦合动力学模型的正确性。

Louis Black comb, from both a fundamental starting treatment, after a long several decades of scientific research and exploration of the latest technology for ceramic massage into a permanent black and Nubia, by adjusting the mechanism of melanin, supplementary nutrition, the head cells, and clear the head melanin transmission channel from the fundamental solution to hair problems

路易黑发梳，从这两个治疗根本出发，经过长达数十年的科研探索，将最新的微晶按摩导入技术应用于努比亚永久黑中，通过调整黑色素产生机制，补充头部细胞营养，疏通头部黑色素传输通道从根本上解决白发问题

This thesis focus on GPS application in magnetic suspension engineering:① the formulation of oblique cylindrical projection is worked out according to characteristics of long distance precise engineering and map projection theory. The author has developed an application to accomplish coordinate conversion from generally used coordinate systems to oblique Maglev Coordinates System.② considering not only project peculiarities but also position of control points, selection of initial points, connection type, selection of repeat baseline and ground observed quantities, GPS network is designed on electronic map and we may extract GPS network information by program developed using Visual Basic 6.0 while the results are stored in control point file and baseline vector file.③estimate accuracy of various GPS networks designed on electronic map by method of 2D restriction adjustment. GPS network simulation design and accuracy estimate come true.④Predominate the rules how connection type , repeat baseline and precise baseline of range finder influence GPS network precision through comparing accuracy of various GPS network. Thereby, the solution how to establish GPS network in long distance precise engineering is figured out.

本论文主要研究GPS技术在磁悬浮工程中的应用：①根据长距离精密工程的特点，从地图投影原理出发，推导出斜轴圆柱投影的应用公式，并编制计算软件，实现从常用坐标系统向斜轴磁悬浮坐标系统的转换计算；②在AutoCAD电子地图上，根据工程的需要，并充分考虑控制点的点位、起算点的选择、连接方式、重复基线的选择和地面观测量的选择等因素，在电子地图上进行GPS网的设计，根据Visual Basic 6.0语言编程，提取出GPS网资料，保存在控制点文件和基线向量文件中；③对在电子地图生成的各种类型的GPS网进行二维约束平差的精度估算，实现了GPS网的模拟设计与精度估算；④通过对各种控制网的精度比较，掌握连接方式、重复基线、精密测距仪基线对GPS网精度影响的规律，解决了长距离精密工程GPS网的建立方法。

Based on the theory of the electromechanical analogy and the special wave equation,the equivalent circuit of the exponential acoustic waveguide was derived,the formula of its impedance transformation was obtained.

基于机电类比原理，从特殊形式波动方程出发，推导出了指数形变截面声波导管的等效电路，从等效电路推导出了声波导管的阻抗转移公式。

It begins with introducing traditional software testing, analyzing the influence of OOS on testing and the basic concept of the object-oriented software testing.

文章从介绍传统的软件测试技术出发，结合面向对象软件的特点，分析了面向对象软件技术对软件测试技术的影响，并从测试的角度对面向对象的机本概念进行了剖析。

Moreover, this paper, based on analysis of educational mismatches and skill mismatches, propose that resrarchers and practitioners should recongnize overeducation again.

本文从人力资本、失业等角度探讨过度教育定义，在此基础上对过度教育的发生率和收益率的计算提出了修正建议，同时从教育不匹配和技能不匹配的角度出发，提出应重新思考过度教育的涵义。

This dissertation aims to detect change information of specified targets based on multi-temporal high spatial resolution panchromatic remote-sensing imagery.

从光谱变换的角度出发，建立了基于灰度变化检测的统一模型；从理论和实验两个角度考察了灰度变化检测的各方法在检测人工目标时对自然地物检测抑制的效应。

The problem of how to extract parallax images from computer models used in stereoscopic display is discussed in this paper.

本文从人类立体视觉的原理出发，重点讨论在计算机中如何从获取用于裸眼立体显示视差图像的问题。

The former firstly establishes state graph of power system, and then, with the use of the adjacency matrix and path matrix of the directed graph, fast finds out the key transmission sections suffering greatly from the outages of overload lines through simple calculation of matrix.

前者根据实时网络拓扑结构和潮流分布状态，在对初始电力网络简化、分区的基础上，利用有向图的邻接矩阵与路径矩阵，通过简单的矩阵运算，快速识别出与过载线路相关的关键输电断面；后者直接利用系统各支路的阻抗，从图论算法的基本思想出发，搜索最易遭受大负荷转移的关键传输路径，从而将安全性分析目标从整个网络缩小到某些关键的输电线路。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。