偶极子云的问题是在通过单基地雷达观测时有效散射截面。
The problem of the dipole cloud is an effective scattering cross-section while observed by a monostatic radar was studied.
偶极子在它的轴的方向上不发射能量。
The dipole does not radiate energy in the direction of its axis .
该方法适用于任何方向的磁偶极子源。
This method is suitable for the magnetic dipole in any direction.
根据电偶极子的原理，建立模拟心电图。
According to the electric dipole theory, simulated ECG was recorded.
自然界中只能出现磁偶极子以及磁多极子的形式。
Only magnetic dipole and higher multipole configuratons occur in nature.
其结果对偶极子阵列的研究和实践有较大的意义。
This will be important for the research and practice of antenna arrays .
所有这些电偶极子随机排列———象无数指向四面八方的罗盘针。
All of these electric dipoles are randomly oriented-like countless compass needles pointing every which way.
此外，天线高度和常规偶极子天线相比减小了约50%。
Furthermore, a size reduction rate of 50% compared with a general dipole antenna is realized.
研究了材料中楔型向错偶极子与界面裂纹的弹性干涉效应。
The elastic interaction between a wedge disclination dipole and an interfacial crack was investigated.
给出利用磁偶极子模型代替小磁石模型的理论及实际依据。
The theory basis is given that using the model of magnetic dipoles to substitute the magnet model.
但是，如果这些电偶极子处于电场中，他们就会立即沿电场的方向排列。
But if the dipoles form in the presence of an existing electric field, they immediately align along the same direction as the field.
第三：以异常神经振荡为偶极子源的脑神经电活动正问题研究。
Third: The forward problem of the nerve activities by the dipole of the abnormal oscillation.
本文同时考虑了偶极子的平动和转动对偶极子回波信号的影响。
The effects of both rotation and translational motion of dipoles on echo signals are taken into account in this paper.
该文研究了螺型位错偶极子和圆形夹杂界面裂纹的弹性干涉作用。
This paper investigates the problem of the elastic interaction between a screw dislocation dipole and a circular interface crack.
研究了多晶体材料中螺型位错偶极子和界面裂纹的弹性干涉作用。
The elastic interaction between a screw dislocation dipole and a mode III interface crack is investigated.
本文采用法向模螺旋天线代替以前采用的短偶极子天线以提高效率。
This paper chooses a normal mode helical antenna to replace the short dipole antenna to improve efficiency.
计算结果表明，传统的点偶极子模型高估了磁流变弹性体的磁致剪切模量；
Results show that, conventional point dipole model has overrated the magnetic-induced shear modulus of the magnetorheological elastomers.
结果表明，对于半波长的偶极子阵列，当阵元间距为半波长时性能达到最佳。
The results indicate that a half-wave dipole array has good performance when array element space is also half-wave.
基于电磁波在海水中的传播方程，分析了海水中磁偶极子辐射场的分布特性。
The distribution characteristic of the magnetic dipole field is analyzed based on the propagation equations of underwater electromagnet ic wave.
研究了自由空间中半波偶极子云团对于单基地观测雷达的有效散射截面问题。
The problem of dipole cloud′s effective scattering cross section while observed by a monostatic radar was studied.
这个理论告诉我们，在任何给定体积的量子真空中都存在数不清的由虚粒子产生的电偶极子。
According to theory, there are countless electric dipoles created by virtual particles in any given volume of the quantum vacuum.
将海水看作无穷大的半空间，提出了基于准近场的时谐水平电偶极子的定位方法。
This paper presents a localization method of a time-harmonic HED based on quasi-near field in deep sea.
结果：①模型实验DLM定位与人工偶极子实际位置一致，但有向球中心靠拢趋势；
Results:The localization of the spherical model by DLM was identical with the actual position of the artificial dipole, but it tended to apporach the centre of the spherical model.
本文利用心脏磁场单磁偶极子模型研究了心脏磁场强度检测信号的频域空间滤波法。
Based on single magnetic dipole model, the spatial filtering method of cardiac magnetic signal in the frequency domain was investigated.
对磁偶极子作环流等效处理，应用互易定理，给出了确定磁场空间分布的一种方法。
We treat magnetic dipoles as circulation equivalently, apply the reciprocity principle, and give a method of the spatial distribution of a magnetic field.
论文叙述了系统总体方案，偶极子阵列声波信号数据采集与处理模块的设计与实现。
This paper has discussed the scheme of the system, the design and realization of the data acquisition and processing module.
理论分析表明：在相同的基片上，双偶极子型印制天线比普通微带振子天线的带宽宽得多；
The results indicate that bandwidth of the new antenna is larger than that of the normal microstrip dipole fabricated on the same substrate.
螺旋桨表面和它的尾涡面离散为四边形双曲面元，每个面元上布置等强度偶极子和源汇分布。
The surface of propeller and its trailing vortex is divided into a number of small hyperboloidal quadrilateral panels with constant source sink and doublet distributions.
螺旋桨表面和它的尾涡面离散为四边形双曲面元，每个面元上布置等强度偶极子和源汇分布。
The surface of propeller and its trailing vortex is divided into a number of small hyperboloidal quadrilateral panels with constant source sink and doublet distributions.
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