结合原理

Initially he wanted to do the use of DNA sequence analysis of Sanger's principle, but to do sequence analysis, the combination of primers and not be able to maintain sufficient specificity.

最初他想利用Sanger做DNA序列分析的原理，但是做序列分析时，引物的结合并不能保持足够的特异性。

The structure and the principle of self-priming pump was introduced,which is used on the ship.

介绍了船用自吸式耐腐蚀泵的结构和工作原理，并结合工程应用分析了此类泵的设计方法和设计过程，在实际应用中取得了较好的效果。

In order to improve the expression capability and the performance ofthe graph transformation in applying to software evolution, a softwareevolution operation description language SEOL (Software EvolutionOperation Language) is proposed, and the structured operational semantics on SEOL is studied, and then the semantic equivalence analysismethod about software evolution operation is described. To the SEOLexpression, the dissertation builds the corresponding processingmechanisms, which include the basic principles and the processing flow,and discusses the graph transformation description in SEOL.

为提高图变换在软件演化应用中的表达能力和处理性能，结合谓词逻辑，论文提出了软件演化操作描述语言SEOL(SoftwareEvolution Operation Language)，研究了SEOL语言的结构化操作语义，指出了软件演化操作语义等价的分析方法，针对SEOL语言表达式，构建了相应的处理机制，包括处理的基本原理和处理流程，讨论了图变换操作的SEOL描述。

This system included s light micro-scope to magnify the image of the micro-structure and project the image of the CCD camera; froze the high speed motion station of micro-structure based on stroboscopic principle to get a serial of dynamic images; and used the optical algorithm based on label field and neighborhood optimization method to motion estimation for sequential images of micro-structures to obtain dynamic characteristics parameters.

系统包括：利用光学显微镜来实现微结构的放大，并将图像投影到CCD摄像机上；基于频闪成像原理来冻结微结构的高速运动状态，获取一系列动态图像序列；基于提出的标号场和邻域优化法相结合的光流算法对微结构的运动序列图像做运动估计，获取其重要动态特性参数。

In association with the improvement design practices on winding equipment for main cable of large span cable bridges liking Shantou Gulf Bridge, Xiling Yangtse River Bridge and Xiamen Haicang Bridge, some contents are systematically described on the basis of electric control system of ZLC series winding machine for main cable, including mechanism composition of the winding machine for main cable, mathematical relationship between rotation speed of winding system and travel speed of the winding machine, work principle of accurately matching control on the two speeds with PLC and frequency converter, wireless measurement and monitor of winding system tension, automatic override control on cable clamp as well as practical effect of a real bridge application.

结合对汕头海湾大桥、西陵长江大桥和厦门海沧大桥等大跨度悬索桥的主缆缠丝施工设备－主缆缠丝机的改进设计实践，以ZLC系列主缆缠丝机的电气控制系统为基础，系统介绍了主缆缠丝机的机构组成、缠丝系统旋转速度与缠丝机行走速度之间的数学关系、采用PLC及变频器对两速度进行精确匹配控制的工作原理、缠丝系统张力的无线测量、监控、索夹的自动跨越控制以及实桥的应用效果。

In addition,two main factors influencing on torque measurement precision,shaft vibration and ambient temperature,are discussed and corresponding revolutions avoiding these influences are brought forward. Then two sets instrument,SEC Shaft HorsePower meter and WDC 1605A Current Ship Power Measurement System,are analyzed,emphasizing on basic principle,performance,installation and operation on-board.

同时，结合具体的测量仪器设备——日本SHOYO公司的"SEC船舶主机功率仪"和美国WDC无线数据传输公司的"1605A通用海上试验功率测试系统"，详细介绍应用扭矩仪实船测量柴油机的输出扭矩和有效功率，包括基本测量原理、设备的技术性能、应用注意事项以及实际安装与操作等内容。

And method to reduce harm of short circuit is analyzed.

最后，结合HEPMG的工作原理，采用了合适的控制方法。

When the drilling pressure of axial concentrated load and a weight force cause the sidewise and vertical bending of the BHA, the geometric stiffness matrix of BHA is derived by virtual work principle, and the nonlinear problem is to be solved by the SVB with gap element.

用虚功原理推导了钻具在集中载荷钻压和均布载荷自重分力作用下的纵向弯曲几何刚度阵，结合间隙元对钻具的纵横弯曲和接触非线性进行了有限元分析。

Based on the similarity principle and nonlinear finite element method, reposition balance method was put forward to find the prestress.

基于相似原理结合非线性有限元法提出了膜结构找力分析的复位平衡法，根据形面的拓扑关系对复位平衡法进行了优化。

Chapter 1 discusses multiple parameters simultaneous estimation of a two-dimensional distributed parameter system; First, the distributed parameter system is transformed by applying a Laplace transform; Then by defining the objective function combined with the principle of optimal control, the problem of parameter estimate is converted into the problem of optimal control.

第一章讨论了一类二维分布参数系统的多参数同步辨识问题。首先利用Laplace变换对原系统方程进行了转换；然后结合最优控制原理定义目标泛函，将参数辨识问题转化为最优控制问题。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐