查询词典 electromagnetic field

Based on the constrained variation principle, the penalty function suited to electromagnetic field calculation is proposed in this dissertation. Detailed research is conducted on some problems, such as the selection of penalisation parameters, the effect of penalisation parameters to the CPU time and the accuracy of solutions.

本文基于变分原理构造了适合电磁场数值计算的罚函数，得到了系统的控制方程，并对罚因子的选取原则及罚因子对计算精度和计算时间的影响进行了深入研究。

In this paper, the space-time finite element theory and its application technologies are studied and discussed. Furthermore the space-time finite element method is used to analyze the transient characteristics of electromagnetism equipments. The work is important to develop the numerical method for the transient electromagnetic field. The detailed work is as follow.In the basis theory of finite element method used in the transient engineering problem, the functional theory and the finite element theory are applied to studied the existence condition of a generalized variation principle, which is the basis of the space-time finite element method.

本文在完善时空有限元法的基础理论和应用技术并将该方法应用于解决电磁装置的瞬态过程分析等相关方面进行了深入的研究与探讨，该工作对于发展瞬变电磁场问题的数值计算方法具有重要的意义，为此进行了如下几方面的工作：在工程瞬变问题的有限元方法的基础理论方面，本文应用泛函理论和有限元理论，系统讨论了一般工程瞬变问题的变分定理的存在条件及对应的变分定理。

In this paper, the fundamental theory of complementary variational method has been introduced. The existing theoretic and technical problems in electromagnetic field computation have been discussed.

本文介绍了互补变分方法的基本理论，研究了将该方法应用在电磁场计算中所存在的理论和计算技术方面的问题。

The problem of uniqueness in 3D electromagnetic field computation using magnetic vector potential A as the variable is studied in this paper.

本文结合具体的工业课题，主要进行了棱边有限元法的基础理论及其在三维非线性涡流场及损耗问题中的应用研究。

Based upon a vectorial identity, an integral equation system concerning electromagnetic field in inhomogeneous medium is derived.

计算三维不均匀介质中测井响应的最常用的方法是有限元素法和有限差分法。

Bachel degree above, majing in Electronics, with over 2 years related wk experience; over 1 year wk experience in EMC design of board /card products; familiar with EMC testing stards the technical requirements of EMC EMS testing items; familiar with theetical knowledge in analog circuit, digital circuit, high-frequency electronic circuit, signal system electromagnetic field.

电子类专业本科以上学历，2年以上相关工作经验，有1年以上板卡类产品EMC设计工作经验，了解EMC测试标准，熟悉EMC，EMS的各项测试项目的技术要求，熟悉模拟电路，数字电路，高频电子线路，信号与系统，电磁场的理论知识。

By electromagnetic field finite element simulation,the influence of cogging structure and pole width on the BEMF waveform was pointed out.

通过电磁场有限元仿真，指出电机齿槽结构和磁极宽度对反电势波形的影响。

Owing to electromagnetic field selective heating materials, the energy is first deposited in the gold portion and then the substrate is conductively and inductively heated.

选用垂直于其表面的射频磁场对镀金膜的硅片进行了感应加热，由于磁场对材料加热具有选择性，感应热量首先作用于硅片上的金膜内，硅片先被传导加热到一定温度，然后被感应加热。

Fiber Bragg Grating sensors can work in the area of strong electromagnetic field, high temperature, corruptive and explosive bad conditions, therefore have more applications than other sensors.

光纤光栅传感器可以工作在强电磁场、高温有腐蚀性的以及有爆炸危险性的恶劣环境中，因而比其它传感器有更广阔的应用范围。

Contrast experiments showed that the "water type trajectory" would be obtained with the promoter of water structure, and "pyridine type trajectory" would be obtained with damager of water structure. They would be related to the strength of electromagnetic field radiation in natural surroundings.

对比 实验表明产生这两类导电轨迹的原因是由于物质对水的结构有促进能力和破坏能力两种不同功能所造成；而电导率持续变化的原因则可能与自然环境某些电磁辐射场强度的持续变化有关连。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新