中轴

These contact elements are overlaid on the parts of model that are being analyzed for interaction.

在对轴有公差和无公差的计算中发现，法向接触刚度对计算结果也会产生影响。

Results The stomata,rang of palisade tissue in leaves and distribution of xylem fiber in stem had certain identity.

结果叶片气孔轴式、栅栏组织的排列、细胞内容物、茎中木纤维的分布具有一定的鉴别特征。

Brain injury in rat activated NF-κB for long time. During the first 1-2hours after injury, activated NF-κB existed mainly in axon, and then appeared inastrocyte in the next 24 hours, lasted for 1 year in pallium.

鼠脑损伤后可致NF-κB的长时间激活，创伤后1～2小时内，激活的NF-κB主要存在于轴突，在创伤24小时后激活的NF-κB主要存在于受伤皮质内的小神经细胞和星形胶质细胞内，这种激活可在脑皮质中至少持续1年。

The results show that the equiaxed zone ratio of the casting billet is greatly increased,with its soidification structure is obviously improved,and the momentum values of the electromagnetic forces both parallel to and perpendicular to the direction of the traveling magnetic field pulsate periodically with time.

采用三相通入不同电流的非平衡线性电磁搅拌技术进行了铸坯的静态浇铸实验，并对电磁搅拌过程中钢液内的电磁力各分量的瞬时值进行了理论分析·结果表明，当采用将电磁搅拌器的三相通入不同电流的非平衡线性电磁搅拌时，在钢液内所产生的电磁力是脉动的，其大小呈周期性变化，尤其是垂直于磁场运动方向上的电磁力，其脉动的幅度很大·由此认为，当采用将搅拌器的三相通入不同电流的非平衡线性电磁搅拌时，所产生的垂直于磁场运动方向上的脉动电磁力是提高等轴晶比率，改善铸坯凝固组织的一个重要原

This project is to analyze the distribution of the light in the high-power laser system, it bases on principles of ray optical, use the paraxial ray trace and real ray trace , proposes a new data structure and way to simulate the light in the optical system in the computer.

本课题就是以含衍射元件的大功率激光装置中由于多次残余反射形成的鬼像为研究对象，从光线光学的基本原理出发，应用近轴光线与空间光线追迹相结合的技术路线，提出一种新型的分析方法和数据结构，开发出用于含衍射元件的高功率激光系统杂散光分析的软件。

Taking stray light in "Shenguang III" as the study subject and basing on the basic principle of geometrical optics,Applying the technological path of paraxial ray and real ray tracing,a new analytic way and data structure,which suits for the specific requirement in analysis and process of ghost images,is presented.

本课题就是以"神光-Ⅲ"激光装置中的杂散光为研究对象，针对高功率多程放大系统在鬼像分析与处理方面特殊要求，从光线光学的基本原理出发，应用近轴光线与空间光线追迹技术路线，提出一种新型的分析方法和数据结构。

All backscattering field s intensity from conducting plate can be calculated by complex ray method ,especially complex ray paraxial approximation in angle domain through modeling the conducting plate.

本文通过建立导电平板反射场分析模型，利用复射线方法特别是角域中的复射线近轴近似方法，有效地实现了导电平板在整个后向范围内散射场的计算，同时计算精度可以由复射线展开参数ξ来加以控制。

Paraxial calculation and analysis of the ghost in technical integration line.

神光Ⅲ原型装置中鬼像的近轴计算与分析。

Since the focal length is a purely paraxial size, numerous sources of error exist during the focal length

因为焦距是一个近轴尺寸，在实际物镜测量过程中存在许多误差源。

The propagation of partially coherent beams through an apertured paraxial ABCD optical system is an interesting but difficult problem encountered in practice.

部分相干光通过受光阑限制近轴ABCD光学系统传输是实际工作中一个十分有意义却是很困难的问题。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。