查询词典 field frame

The distribution of the electromagnetic field of an uniformly moving electric dipole is calculated by analyzing the electromagnetic potential of the electric dipole and making use of the covariability of electromagnetic field in different inertial frame under the theory of relativity.

本文通过对电偶极子电磁势的分析和相对论下电磁场在不同惯性系中的协变分布，计算了作匀速直线运动的电偶极子的电场和磁场的空间分布

In addition,for both the cases of a uniformly accelerated two-level atom interacting with a quantized real massless scalar field and a uniformly accelerated multilevel atom interacting with a quantized electromagnetic field,we calculate the rate of change of the mean atomic energy from the point of view of a coaccelerated frame.

另外，对于匀加速的两能级原子与无质量的量子实标量场相互作用以及多能级原子与量子电磁场相互作用的情况，我们还在一个共同加速的框架下计算了原子的平均能量变化率。

A spacetime point with a frame is proposed to be related to a skew-symmetric tensor field of degree 3 defined on Minkowski space, the field consisting of elements in a fixed tensor set.

场中的张量取自于一个固定的张量集合，我们得到了Riemann正则坐标下引力场的一个级数表示式。

This study takes the reservoir of the Kela 2 gas field of the Tariam basin, the western China, as an example for understanding the relationship between the porosity and permeability and autogenetic minerals and textures of the clastic rocks on the vertical depth scale. The secondary pores are essential reservoir space in this gas field, moreover, their origin is closely related to dissolution of the frame grain of plagioclase and the cements of calcite.

本文以克拉2气田储层为研究对象，探讨了该区纵向深度上孔隙度、渗透率与矿物组合、结构上的变化，发现次生孔隙是本区储层的重要储集空间，并且与长石骨架颗粒和方解石胶结物的溶蚀密切相关。

To better the application of PTV technique in complex surface flow field,an automatic image segmentation method based on frame difference and adaptive threshold was established,and particle signature identification was introduced,which bettered the effect of particle recognition and tracking in complex flow field.

为了改善粒子跟踪测速技术在复杂流场测速中的应用效果，本文采用基于帧间差分和自适应阈值的自动图像分割技术，引入粒子的特征标识，改善了复杂流场中粒子识别与运动跟踪的效果；另外，通过流速滤波、插值处理，提高了流速测量的精度。

Using FE soft ANSYS, the stress field and temperature field in stress frame prepared by ZG3 10-570 was simulated.

利用ANSYS有限元软件，模拟计算了ZG310-570的应力框冷却阶段的应力场和温度场。

In addition, the design idea of the financial middle business, formed in this thesis, can be extended to the whole banking field, and form a integrated frame in financial field to improve the combination and the reconstruction of the whole banking business.

本文提出的金融中间业务平台可以适用于快速定制开发广泛的金融中间业务种类。论文研究结果对于金融领域的业务整合及业务再造，具有一定的实用意义和参考价值。

It is difficult to measure the electromagnetic field because the frame of the aluminum reduction cell is so complex. With the development of computer technology, we can simulate the electromagnetic field. It has great significance to conduct the research.

但是由于铝电解槽结构的复杂性，在实际生产过程中对磁场很难直接进行测量，随着计算机技术等的发展，使得对铝电解槽磁场进行仿真计算成为可能，这个方面的研究对于电解铝行业也就这很重要的意义。

Based on numerical simulation flow after treatment methods and implementation. This paper drawing river ice jam thickness contour map, vertical water flow under the ice jam contour map as an example, the use of Surfer software described in detail various graphics rendering; Focused on the Surfer with VB programming software secondary development to achieve flow numerical simulation after treatment, showed that automatic change the data files to the Surfers;Introduced Active automation technology and Visual Basic Application Program Interface, and the interface technology will combinate VB powerful software development capabilities and Surfer software powerful mapping functions , achieve the key code and the mapping results map examples: under the ice sheet flow velocity field vertical contour map, three-dimensional wire-frame plans, such as flow field vector graphics, and dynamic display and output the graphics.

基于水流数值模拟后处理的方法与实现，本文以绘制河流冰塞厚度等值线图、冰塞下水流纵向流速等值线图为例，详细介绍了运用Surfer软件绘制各种图形的方法；重点阐述了用VB编程对Surfer软件进行二次开发实现水流数值模拟后处理，显示向Surfer数据文件自动转换的过程；介绍了Active自动化技术及其与VB应用程序的接口技术，并利用该接口技术将VB的强大软件开发能力和Surfer软件强大的绘图功能相结合，给出了实现该接口技术的关键代码以及绘制成果图件的实例：冰盖下流速场纵向流速等值线图、三维线框图、流场矢量图等图形，并输出图形与动态显示。

By the use of finite element method and through the analysis of stress field in the frame structure of shaving board foming machine this paper carried out an op-timal design of this frame sturcture by adopting a mode of di-mension and shape functions,thus give the structure a full play on the mechanical propersties of its material under the catalogue of optimization searching of lowest weight.

刨花板成型机机框结构有限元分析及优化设计汤文成，易红，葛巧琴摘要通过有限元方法对刨花板成型机机框结构的应力场分析，采用尺寸和形状函数方式对其进行优化设计，使结构在重量最轻的寻优目录下充分发挥其材料的机械性能。关键词有限元方法，优化设计Opti

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。