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Some key problems of line structured light sensor is given comprehensive studies theoretically and practically, which include the analysis of sensor's mathematic model; the improvement of the key parts of the sensor, the light source and imageforming system; the method of on-line measurement and the evaluate of BGA coplanarity. These studies are supported by corresponding satisfactory experiments. This dissertation covers the following aspects concerning the main work and creative research in the subject: 1. The operating theories and features of pattern measuring methods are systematically introduced.

本文成功地将线结构光传感器应用于BGA芯片管脚共面性的在线测试，并针对线结构光传感器测量的一些关键问题进行了深入细致的研究和探讨：建立了线结构光传感器的模型并对结构参数进行了详细的分析，针对传感器的关键环节—光源和成象系统的改进都提出了创新性的理论和方法，对管脚形状比较复杂的BGA芯片球栅阵列的在线测试方法和评定方法进行了理论研究和实验分析，并获得了满意的结果。

In this paper, the damage to the mineral crystal lattice of the earth's surface caused by the cosmic ray is demonstrated experimently and theoretically.

摘 要：文章从理论与实验两个方面论证了宇宙射线对地表矿物晶格造成损伤的可能性。

The thesis resorts to the methods of deduction and counterevidence to demonstrate the defects of textualist and contextualist stylistics both theoretically and practically. Then it puts forward an analytical model, which incorporates them.

文章首先用演绎和反证的方法，从理论和实践两方面指出了文本主义文体学和语境主义文体学的缺点，然后提出了一种有机结合这二者的综合分析模式，并用该模式分析了安德鲁·马韦尔的《致羞涩的情人》，威廉·布莱克的《伦敦》和乔治·欧维尔的《绞刑》等三篇作品。

The thesis resorts to the methods of deduction and counterevidence to demonstrate the defects of textualist and contextualist stylistics both theoretically and practically. Then it puts forward an analytical model, which incorporates them. Finally, by applying this model to the analysis of Andrew Marvell's To His Coy Mistress, William Blake's London and George Owell's A Hanging, this analytical model is proved to be able to avoid many drawbacks common with the previous stylistic studies.

文章首先用演绎和反证的方法，从理论和实践两方面指出了文本主义文体学和语境主义文体学的缺点，然后提出了一种有机结合这二者的综合分析模式，并用该模式分析了安德鲁·马韦尔的《致羞涩的情人》，威廉·布莱克的《伦敦》和乔治·欧维尔的《绞刑》等三篇作品。

Put forward to hope, the bill counterplea of our country is abounded ceaselessly theoretically and develop, the contradictory system that makes our country is ceaseless and perfect, make bill counterplea system produces effect in market economy.

并提出希望，我国的票据抗辩理论不断丰富和发展，促使我国的抗辩制度不断完善，使票据抗辩制度在市场经济中发挥功能。

Loss factors of this coupler are analyzed theoretically.

理论分析了它的损耗特性。

Theoretically speaking, this is a financial product which can cause the households and credit association realizes the win-win. However, the situation is not good in the reality, and even begins to decline in the recent years.

从理论上说，这是一种能使农户和信用社实现双赢的金融产品，但在现实中却运行不佳，甚至在一些地区出现萎缩，不仅违约率居高不下，信用社也丧失了推广的热情。

This maneuver compresses the soft-walled esophagus between the cricoid cartilage and the cervical vertebrae, theoretically preventing passive

这种方法可以压迫处于环状软骨和颈椎之间的食道，避免胃内容物的反流。

It is undoubtedly correct to theoretically differentiate criminological concept of crime from criminal juristic concept of crime, but it should not be a reason for abandoning the study of crime constitution in criminology .

对犯罪学的犯罪概念和刑法学的犯罪概念作理论区分是正确的，但这不应该成为犯罪学研究中丢弃犯罪构成问题的理由。

As stated above, to increase honing stone pressures can remarkably decrease ceramic critical grinding stresses, increase ceramic removal at the crosshatch intersection points, and promote the propagation of grinding cracks. The feasibility of efficient honing for ceramics is proved theoretically.

在上述研究结果基础上，分析了陶瓷材料塑性加工机理，磨削应力低于临界磨削应力是实现陶瓷材料塑性加工的理论依据，并提出陶瓷材料塑性珩磨加工中的两个主要因素：磨削深度和磨粒粒径的精确控制。

They have quite a lot of work to do.

他们有许多工作要做。

Let us give you a more elaborate example of this process.

让我们给你这个过程的更多的详细例子。