查询词典 source free vector field

Building of the operation rules of curl and divergence for vector field in R 3 space;2. Analysing by mathematics and the concepts of flux and curl , we can get the differential form of gauss s theorems in electrostatic field and ampere s cycle theorem in electrostatic field.

电动力学中的内容一般是从电磁学最基本的实验规律出发，由静电场中的库仑定律得到静电场的高斯定理和环路定理，利用通量与散度、环流与旋度的关系，得到静电场的高斯定理和坏路定理的微分形式。

The results are displayed vividly in virtual scene which is established with program language of Visual C++ and OpenGL. At present flow field simulation manner mostly has time delay, deficient controllability, so this paper brings forward the methods of drawing flow velocity vector graphics with OpenGL in the 3D virtual scene to simulate and analyze flow field. At the same time cross section and flood analysis are completed. Accordingly, it assists flood flow field visualization and provides the more effective analysis method for the flood mathematics model research and application.

针对目前流场模拟方式大多存在模拟时间滞后、缺乏可控性等问题，本文提出基于水力学模型计算得到的流速数据，在三维虚拟场景中利用OpenGL绘制洪水流速矢量图的方法进行流场动态模拟分析，在流速变化较大区域和需要重点观测区域，提取断面，分析断面和洪水淹没情况，从而解决洪水流场数值可视化的问题，为洪水数学模型的研究与应用提供更加直观有效的分析手段。

The combine gradient vector force field with potential force field takes for new exterior force field on snake model.

梯度向量流和图像梯度的有机组合产生的力场作为Snake模型新的外力场。

Those questions about " Gauss theorem" of electro - magnetic field arecleared up, and the difference between " Gauss theorem" of electro - magnetic field and" Gauss theorem"of vector field is pointed.

本文旨在澄清有关电磁学中"高斯定理"的诸多疑问，并指出它与高等数学中的"高斯定理"的区别。

In this paper we discuss some properties of the metric field outside a rotating and charged object under VGM (The Theory of Gravitation by Considering the Vector Graviton Field and Metric Field).

本文根据矢量引力子场度规场理论，讨论了旋转带电天体外引力场的某些性质，得出如下结果：1。

Based on the wave equations of electromagnetic field, a new time-domain numerical method-direct difference solution of vector wave equation is researched. Calculating formulas of electric field and magnetic field are also given.

对电磁场波动方程进行了分析，研究了一种基于电场波动方程的时域数值方法―矢量波动方程的直接差分解法，给出了电场和磁场的计算公式。

Using particle image velocimetercombined with CFD dynamic mesh,an experimental and simulation study was carried out on flow field in the near-wall region outside a vibrating tube.The charts of velocity vector of flow field outside the tube under five conditions with amplitude 1.3 mm and frequency 5—25 Hz were obtained,and the cosine of average synergy angle of flow field outside the tube was calculated.

采用粒子图像测速与CFD动网格相结合的方法，对振动圆管外近壁区流场进行了实验及模拟研究，得到了振幅1.3 mm、频率5～25 Hz范围内的管外流场速度矢量图，计算了不同工况下管外流场的平均场协同角余弦值。

Among these, in addition to free software, other types of software itself is a fringe of the rights or obligations of the user settings, specifically, free trial software is the traditional business "after the first trial using products," the network piracy, Sharing software users to read is usually indirect advertising revenue made the "indirect charges software", open-source software is usually require users to change in the commitment to open source after the revision of the obligation.

这其中，除了完全免费软件外，其他类型软件本身就是附带着某种权利或对使用者设置义务的，具体说来，免费试用软件不过是传统商务中"先试后用产品"的网络翻版，共享软件通常是以使用者阅读广告间接取得收入的"间接收费软件"，开源软件则通常要求使用者在改动源码后承担公开修改内容的义务。

All open source software is cost-free, but not all cost-free software is open source.

拥有随意修改，维护和重新调配的自由

Raster To Vector converter is the most powerful and absolutely free solution for digitizing vector data from image sources.

光栅矢量转换，是最有力的和完全免费的解决方案，数字化矢量数据，从形象的来源。

I want to be a big fish in a small pond.

我要做一条在小池塘里的大鱼。

While the software functioned well, we did not feel the same about their customer support!

虽然该软件运行良好，我们没有同样的感觉他们的客户支持！