查询词典 electromagnetism

"Unified field theory," which would unite general relativity—his own theory of spacetime and gravitation—with Maxwell's theory of electromagnetism.

"统一场论"：爱因斯坦最后三十年试图实现的工作，将他的重力时空观和麦克斯韦的统一场论结合起来的理论。

Einstein himself devoted the second half of his life in quest of a unified field theory for the gravitation and the electromagnetism, but he failed at last.

但是理论学家相信，自然界是统一的，因此引力、电磁力、弱力、强力这四种基本相互作用应该可以用一个统一的理论来描述。

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。

The electromagnetism lifts heavy objects the function to have the formidable magnetic field strength, several dozens ton heavy iron sheet, the iron wire, the nail, the scrap iron and other each kind of iron material, do not pack a box not to pack do not need to tie up, can very conveniently the collection and the transporting, not only operates reduces effort, moreover worked simplifies.

电磁起重机能产生强大的磁场力，几十吨重的铁片、铁丝、铁钉、废铁和其他各种铁料，不装箱不打包也不用捆扎，就能很方便地收集和搬运，不但操作省力，而且工作简化了。

This thesis in term of characteristics hereinbefore, adopted slippage and differentia rotate speed theory of electromagnetism to imitate differently road conditions of appendiculate quotiety.

并以此为基础，进一步分析了车轮在滚筒上被拖动时、制动时和急加速时的受力情况，建立了附着力与电磁滑差离合器输出力矩之间的力学模型。

The main research work include (1) introduces the gemal method and steps of asteroidal magneto design, especially the method and steps of electromagnetism compute, follow these steps, the design parameters such as relative structure dimensions, coil and magnetic circuit parameters can be obtained. This method is easy to use.

本文主要工作如下：(1)本文指出了星形磁电机设计的一般步骤和方法，重点讨论了电磁计算的方法步骤，据此可以得出有关机械结构尺寸、绕组及磁路参数等设计参数；本文提出的磁路计算方法，简单适用；本文还提出了一系列关键参数规范化设计模型的经验系数。

With the semiconductor component being devlopped,it is forming a new type of the Releases on the basis of calorifics and electromagnetism. It overtakes the disadvantages of the calorific-electromagnetic Release which it is difficulty to be adjusted and its precision is low.

半导体脱扣器是在热-电磁式脱扣器的基础上，随着半导体元件的发展而形成的一种新式脱扣器，半导体式脱扣器克服了热-电磁式脱扣器整定校正困难、精度低的缺点，它的精度高、耐恶劣环境能力强。

In recent years, the construction of multi-functional inorganic materials is currently of great interest due to its intriguing electromagnetism, photochemistry, electric conductivity and catalytical, etc.

近几年，由于多功能无机材料具有迷人的电磁、光化学、电导和催化等特性是近来研究热点之一。

By optimizing such process as refining dreg series and deoxidizing,mode of adding slagging raw materials,blowing Ar system,preventing nitrogen adding in refining process,adopting such process measures as controlling degree of superheat of smelten steel strictly,selecting suitable pulling speed and colling water quantity,using electromagnetism stir in continuous casting,the center carbon segregation index is at about 1.04 basic...

通过对精炼工序中精炼渣系和脱氧工艺选择、造渣原料的加入方式、吹氩制度、防止增氮等工艺的优化，在连铸中采用严格控制钢水过热度、选用合适的拉速和冷却水量、使用电磁搅拌等工艺措施，中心碳偏析指数集中在1.04左右，夹杂物尺寸变小、数量大为减少，疏松和缩孔均降低到0.5级以下，线材面缩率达到34%以上，大部分为41%~44%，索氏体体积分数达到91%，可顺利拉拔至0.3 mm。

As the working environment of electromagnetism gets deteriorative and a great deal of jammings exist, target detection and information extraction at very low SINR are difficult.

由于电磁工作环境的恶化和大量射频干扰的存在，在极低的信干噪比条件下进行目标检测和信息提取十分困难。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。