查询词典 archimedically ordered number field

In this paper, field entropy and Schrdinger-cat in the two-photon Jaynes-Cummings model with atomic motion are studied and the influences of the atomic motion and the field structure on the evolution of the field entropy and the generation of the Schrdinger-cat state are examined.

文章研究了具有原子运动的双光子J-C模型的场熵和薛定谔猫态，考察了原子运动和场结构对场熵和薛定谔猫态形成的影响。

If the table contains an AutoNumber field, do not include this field in the SQL INSERT command the value of this field will be taken care of automatically by the provider

如果表单一个"AutoNumber"字段，那么请不要对这个字段使用INSERT命令（因为这个字段中的值会自动生成）。

Both the sun's magnetic field and the Earth's magnetic field can be oriented northward or southward (Earth's magnetic field is often described as a giant bar magnet in space).

太阳和地球的磁场都可以定向为南极和北极（地球的磁场通常被描述为一个在空间中的巨大条形磁铁）。

By comparing the characteristics between induced electrical field and steady magnetic field using time vector method,the corresponding relationship between them was found out and the "Biot-Savart s" law of induced electrical field presented.

利用矢量分析的方法对比了感生电场和稳恒磁场的特点，找出了两者的对易关系，由此给出了感生电场的"毕奥—萨伐尔"定律。

The author points out: if lots of the conflicts of philosophical foundation the 20th century's quantum mechanics faced with, well-known to everybody, should be logically attributed to the confusions of the some fundamental concepts in the classical electromagnetic field theory, the series of logic inconsistencies implied in the classical electromagnetic theory and the forms of difficulties the modern computational electromagnetism encounters while solving time-varying electromagnetic field should be also logically attributed to an anomalous fact that series of fundamental mathematical propositions relating with bispinor differential operator, which naturally appears in the formal expression about dynamic electromagnetic field, have not be solved really while the related complete mathematic physical models or well posed boundary value problems have not been built.

著者指出：如果说20世纪的量子力学之所以面对哲学基础众所周知的矛盾，在逻辑上最终不能不归咎于经典电磁场理论体系的一些基本概念并没有真正得到澄清的话，那么，经典电磁场理论体系隐含的众多逻辑不自洽问题与目前计算动态电磁场所面对的困境，则必须逻辑地归咎于与双旋度微分算子相关的一系列基本数学命题并没有解决，而相关的恰当数学物理模型至今没有真正建立起来的缘故。

Firstly, some fundamental knowledge, such as the describing of laser field, the Kind of electron-atom scattering in a laser field, and so on, are introduced. Then a compution method which is called the Second-order Born approximation and is used to calculate the cross section of electron-atom scattering in a laser field, is provided.

本文首先介绍了激光场的描述、激光场中电子—原子散射的分类等相关理论，接着详细描述了一种计算激光场中电子—原子散射截面的方法——二阶玻恩近似理论。

The result showed that the amount of total phosphorus in the soil of farmland is the highest,while the wet grassland field with arbor shrub and grassland field and bulrush field is lower than that in farmland before rain.

结果表明，降雨前农田土壤总磷的含量最高，其次为湿生草本带，乔灌草带和挺水植物带则相对较低；土壤表层总氮的含量乔灌草带最高。

In order to solve the problem in calculating the klystron output circuit characteristic, based on field analysis and post-processing of 3D electromagnetic field simulation software ISFEL3D, a field analysis method is proposed.

为解决速调管输出回路特性参数计算时遇到的困难，结合场分析的手段和3维电磁场模拟计算软件ISFEL3D后处理部分，提出了场分析法。

Bsed on real circumstances of TV transmitting station,the artiele presents a methodof calculation of field strength in case the radiowave is affected by ground objectsand meteorological conditions,and that of approximate calculation of field strengthIn penumbra areas,and so on,A method of calculating field strength in city is alsopresented with int...

文章从电视发射台的实际情况出发，介绍了电波受地物、气象等影响时的场强计算方法和半阴影区的近似场强计算方法等。还介绍了在城市的电波计算中，引入"建筑物密集度"参数的场强计算方法。

The full study on electric-field effects coupled with magnetic field effect and the charge carrier mobility in these materials at electric field seems to be lacking.

目前人们对巨磁阻材料中的场致电阻效应产生的机理以及在电场下巨磁阻材料中的载流子迁移率的行为还缺乏充分的研究。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。