查询词典 field trip

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。

Taking as research method, field work as "the special skill" of the ethnology, also no doubt is the important research method of this article. Gaining the first material through different forms of visiting, talking,investigation and so on, has made the historical materials and field work double win. The historical literature is the direct foundation of tracing the nationality source and studying with textual. The history data of local chronicle, history book, genealogy, genealogy, etc. can make field date and literature date bring out the best in each other.

从研究方法而言，田野调查作为民族学的"看家本领"，无疑也是本文的重要研究方法，通过访谈、调查、走访等不同形式获取的第一手资料奠定了材料和立论的可信度；历史文献是追溯族源、考究历史的直接依据，地方志、史书、(来源：A4acaBC论文网www.abclunwen.com)族谱、家乘等史料使得田野资料和文献资料相得益彰；对白族的任何研究，如果脱离它与大理白族的联系孤立开展，将带有很大的局限性，因此联系的观点和比较的方法也是本文的重要方法。

The China chronicle play materializes the confliction and collusion mass culture field, national ideology field and business field. At the same time, it affects fashion, value idea and cultural swim complexly and profoundly.

历史剧的发展不仅反映了当代中国政治、经济、文化的分化和冲突，同时也对当代中国社会的时代风尚、价值观念、文化潮流产生着复杂和深刻的影响。

It is verified that a proper magnitude of linear to loop current ratio will results an omnidirectional circular polarized wave with same pattern for all transverse electromagnetic field in the far field but not in the near field or vise versa.

验证适当强度比例之线电流与环电流可在远场辐射四方均匀之圆形极向波，且所有横向电磁场之瞬间场形均相同，但在近场则否，或反之亦然。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。