我必须问这里是否有一个网状偶极？
所以现在我们说，如果正电荷中心，就位于，那么还是在这里负电荷中心也在这里，所以没有空间偶极。
So now that means if this is where the center of positive excess charge lies and on top of it is the center there is no displacement of the charge so there is no net dipole.
这是一个偶极，有正电端也有负电端，偶极具有一定性质。
It has a negative end and a positive end and it has certain properties.
若我们将偶极释放到自由空间中，比如说放到电场里，他们会自动排序按同一方向。
If we put a dipole that has the freedom to move, we put that dipole in an electric field, it will align itself with the field lines.
我们也标出了一个偶极。
但是，如果目标是精确的重放声音的话，一个扬声器必须是声学上的点声源(单极点，全向响应)，或者是一个声学上小的双向源(偶极)。
But if the goal is to reproduce sounds accurately, then a speaker must be either an acoustic point source (monopole, omni-directional) or an acoustically small bi-directional source (dipole).
偶极，四极。方位角对称。静磁，带电量守恒及磁力。
Dipoles, Quadrupoles. Azimuthal Symmetry. Magnetostatics, Charge Conservation and Magnetic Force.
禁戒跃迁指的是选择定则所不容许的偶极辐射跃迁。
Forbidden transitions are those for which dipole radiative transitions are not allowed by the selection rules.
本文采用数值逼近的方法，逐段用多项式表示偶极—偶极排列的瞬变电场。
By use of numerical approximation method, the paper USES the polynomial to approach segmentally the transient electric field from dipole dipole array.
首先用差分方法求解了偶极天线上的静态电容分布，并分析了分布电容与天线结构参数之间的关系。
The distributed static capacitance of the dipole antenna was solved by finite difference method. The influences of the antenna configuration coefficients on the distributed capacitance were analyzed.
介绍了一种由折叠臂偶极天线和并联介质块组成的小型化超宽带天线。
A kind of ultra wideband (UWB) antenna, which consists of an arm-folded dipole antenna and a dielectric block, is proposed.
大脑初级体感皮质反应由等电流偶极(ECD)评价。
The brain primary somatosensory responses were evaluated by equivalent current dipoles (ECDs).
本文采用并矢格林函数和场量变换方法，给出了圆形波导中偶极天线辐射的普遍公式。
The general formulas of radiation from dipole antenna in a circular waveguide are given by means of dyadic Green's function and field transformation.
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 electromagnetic field are synthesized by summation of the electromagnetic field of short current segments or Hertz dipoles.
本文利用路-阵方法分析了对数周期偶极天线。
A log periodic dipole antenna is analyzed by using circuit array approach.
偶极谐振子和可以用积分后的光子吸收截面来表示。
The dipole oscillator sum can be expressed in terms of the integrated photo absorption cross section.
粉尘粒子的偶极效应使粒子凝结成具有链式结构的粉尘集合体。
The dipole effect of the plarized dust particles makes the particles form a dust collective that has chain structure.
研究了与关联双模压缩真空场作用的级联三能级原子的偶极压缩效应。
The dipole squeezing effects of a three level cascade atom interacting with a correlated two-mode squeezed vacuum field are investigated.
电极效应在用偶极-偶极排列时是经常遇到的一种干扰因素。
Electrode effects, which are always a hindrance when the Dipole-Dipole array is used.
有关体系的无辐射能量转移和偶极弛豫机制将进一步探讨。
The mechanisms for non-radiative energy transfer and the dipolar relaxation will be further studied in detail.
结束电偶极辐射之讨论。定性解释电四极特性及磁偶极辐射。
Finish Electric Dipole Radiation. Qualitative Aspects of Electric Quadrupole and Magnetic Dipole Radiation.
还给出了偶极层电容和电极问射频耦合电容半经验公式。
This paper also presented a semiempirical relationship of dipolar layer capacitance and coupling capacitance.
通过数值计算，讨论了原子的初始相干性及原子间偶极相互作用对该偶极压缩效应的影响。
The influences of the initial atomic coherence and dipole-dipole interaction on the squeezing effect were discussed by numerical calculations.
当偶极相互作用变得很强时，这些环将会消失。
While the hysteresis loop closes as the dipolar interaction is quite strong.
文中推导出单轴各向异性媒质半空间上方垂直磁偶极源电磁场的精确解析表达式。
We derive an accurate and analytical expression for electromagnetic fields of a vertical magnetic dipole over an anisotropic uniaxial medium half-space.
在磁偶极相互作用区域内，我们研究了一个矩型磁性线中的静磁波导模式，解析的色散关系被求出。
In the region of dipole-dipole interaction, we investigate magnetostatic guided modes in a rectangular magnetic wire. The analytical dispersion relation is obtained.
模式中引入了代表热带低频偶极型对流的异常强迫。
Anomalous forcing is introduced into the model, representing the tropical low-frequency dipole convective pattern.
模式中引入了代表热带低频偶极型对流的异常强迫。
Anomalous forcing is introduced into the model, representing the tropical low-frequency dipole convective pattern.
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