偶极场

它就是所谓的偶极场――具有一个北极和一个南极。

It is what is called a dipole field with a north and South Pole .

但是偶尔这偶极场会转换极性&南极和北极倒转，这个过程似乎需要几千年的时间。只有碰上极倒霉的意外变故，他明天才会来不了。

But occasionally this dipole field switches polarity north and south reverses , and this process seems to take a few thousand years . Only a serious mischance will prevent him from arriving tomorrow .

本文的主要内容如下：一、利用快速、高效的数值算法成功模拟了三维结构样品的iMQC成像信号，该算法通过傅立叶变换能在k空间中处理远程偶极场和扩散等效应。

The main results are summarized as follows : First , we employed a fast , efficient numerical algorithm which switches back and forth between real and Fourier spaces to simulate distant dipolar field ( DDF ) and diffusion effects for heterogeneous three-dimensional structures .

给出了特殊类型的日冕物质抛射（CME）数值模拟定性结果，这种CME核心闭磁场结构前半部分磁力线的方向与太阳整体偶极场磁力线的方向相反。

Qualitative numerical result of a special type of Coronal Mass Ejection ( CME ) is presented . The magnetic field direction in front half part of central closed magnetic field of the CME is opposite to that of the solar global dipole .

通过测量准偶极场计算卫星磁偶极矩

Calculation of satellite magnetic dipole moment by measuring QUASI-DIPOLE field intensity

东亚地区地磁非偶极场长期变化的分析

Analysis of secular variations of non-dipole geomagnetic field in East Asia

东亚地磁非偶极场的变化特征研究

Change Charactristics of Geomagnetic the Non-dipole Field in East Asia

余洛的研究小组认为，假如此区块是一种与主要地核运动相抗衡的「漩涡」区，那麽此区块的增长便可以解释现今磁偶极场的衰减现象了。

Hulot 's team argues that the growth of these reversed patches , presumably eddies that are working against the primary motion of the core , can explain the current decline in the dipole field .

本文利用连分式方法计算了偶极场中导电导磁球体的电磁响应函数，并给出了计算数据及图表。

The EM response function from a conducting ( both electric and magnetic ) sphere in a dipole field is calculated by using the continued fraction technique , and the resultant data and diagram are given .

这与偶极场背景下的结果不同。在偶极背景场下，系统的灾变能阈与灾变点处磁绳的磁通和背景场的开放程度几乎没有关系。

These results differ from those for the bipolar background field case , in which the catastrophic energy threshold is almost independent of the magnetic fluxes of the flux rope and the extent to which the background field is open .

然而，因为在脉冲星磁层的加速区中被加速的辐射的粒子可在开场线区产生电流，该电流将感生磁场扰动，从而导致相对于偶极场的扭曲的磁场。

However , since radiating charges accelerated in the gaps of the pulsar magnetosphere will create some currents in the open zone , the current will induce a magnetic field , and then will result in a distorted magnetic field relative to the dipole field .

电偶极辐射场计算式的推导

The inference of formula of electric dipole moment radiant field

电偶极辐射场的讨论

Discussion About the Radiation Field of Electric Doublet

根据线电流与电偶极辐射场的关系，由无限长棱边的场反推得微元的场。

According to the relation between the radiating fields of line current and dipole , the radiating fields of the edge elements are obtained by reversion from the scattering fields of the infinite edges .

阵列偶极源辐射场在导电地层中传播的方向特性

The direction characteristic of radiation wave of array dipole source in the conductive strata

椭圆振动电偶极的远场辐射

The Radiant Power of Elliptic Polarization Electric Dipole

东亚-北太平洋偶极型气压场及其与东亚季风年际变化的关系

Relationship of Interannual Variation Between an Eastern Asia-Pacific Dipole Pressure Pattern and East Asian Monsoon

用近似法分析了有耗媒质中非对称电偶极的激励场，得到一个场和焦耳热的简单的解析表达式。

An approximate method is used to analyse the excited fields with a non-symmetrical dipole in lossy media and simple analytical expressions about the fields and joule heat are obtained .

研究发现光偶极天线的远场变化规律跟传统的偶极天线类似，但由于高阶LSPs的影响，光偶极天线远场图样更快地出现了旁瓣。

Research show that far-field characteristic of optical dipole antenna is similar to conventional dipole antenna , and its far-field pattern will be faster appear side lobes owing to the effect of high-order LSPs .

层状媒质上有限长度偶极天线的辐射场

The Radiation Field of Finite Length Dipole Antenna on Layer Medium

有介质覆盖层的微带偶极天线的辐射场和所激励的表面波

On radiation field and surface wave excited by microstrip dipole antenna with dielectrical cover

三能级原子系统中原子偶极压缩和光场压缩间的关联

Relations Between Atomic Dipole Squeezing and Field Squeezing in the Coupling System of a Three Level Atom

计算偶极天线之辐射场型随频率之变化。

The frequency response of radiation pattern of a linear dipole antenna by Hertz dipoles field summation approximation .

一赫芝电偶极加上一赫芝磁偶极在近场之椭圆极向波与两种波阻抗。

The elliptical polarized wave and two types of wave impedance in the near field of current sources of an electric and a magnetic Hertz dipoles combination .

本例以赫芝电偶极电磁场合成之近似结果，验证偶极天线远场及近场之特性。以很多小段赫芝偶极之完整电磁场合成一任意线电流之近场与远场电磁场。

The near and far field properties of line current of arbitrary shape is demonstrated in this example . The near and far electromagnetic field are synthesized by summation of the electromagnetic field of short current segments or Hertz dipoles .