电磁场

In order to clarify the mechanisms of PEMF on osteoporosis, bone marrow cells derived from both femora and tibiae of ovariectomied rats are cultured in vitro to investigate whether osteoclast proliferation is inhibited by PEMF or not.

为了要更进一步探讨电磁场刺激抑制骨质流失的内在机转，因此本研究将以大白鼠之双侧卵巢切除为模式，取出长骨骨髓细胞做体外培养，藉此探讨特定参数单脉冲电磁场刺激是否经由对骨髓中的蚀骨细胞形成，产生抑制作用，而达到控制骨质流失的目的。

First the three-dimensional Hailmuhz equation of magnetotelluric field is split into two 2D equations which could be changed into 1D equation by Fourier transformation method. The two zootomic coefficients of the equation are found out by the derivation of vertical component of electromagnetic field being sufficient the equation and the boundary condition. The resolution of 1D equation can be confirmed.

首先将大地电磁场满足的三维亥姆霍兹方程降维分裂成两个二维响应方程，然后对每一个二维方程进行傅里叶变换，使二维方程变为一维方程，通过大地电磁场垂向方向的导数在地面上所满足的边界条件，确定外推方程中的两个待定系数，从而得到一维外推方程的解。

deviation of the antenna radiation resistance seems larger in some textbooks about the electromagnetic theory for the editors have made some similar treatment when discussing the radiation power of short antenna.combining the concept of physical with mathematical tools and the precise results are gained,that is the real radiation resistance of electric dipole antenna is about ten times smaller than that of the approximate results in the actual literature by researching the electromagnetic field theory and average energy density.this offers evidence to grasp the radiated ability accurately.

小 摘要：在部分有关电磁场理论的教材中，编者讨论短天线的辐射功率时，由于作了某些近似处理而所得天线的辐射电阻值偏差较大。从天线辐射的电磁场理论和平均能流密度出发，使物理概念和数学工具相结合，运用矢量运算推导出精确的结果，即电偶极子天线的实际辐射电阻要比文献中的近似结果小数十倍，因而为准确把握天线的辐射能力提供了依据。

We indicate that there are violations of the Cauchy-Schwarz in-equality in the interaction of the atomic Bose-Einstein conder sate with lasers,which meansthe existence of nonclassical correlations between atoms and photons.

对外部量子电磁场的各种量子态，计算了超流的二阶关联函数，分析了超流的压缩特性。表明外部量子电磁场中的热噪声不影响超流的压缩特性，但影响超流的二阶关联函数。

The flex spline deflection of EHD actuator under the electromagnetic field and its effect on the magnetic field are analyzed with the consideration of couping of structural deflection and magnetic field.

分析了电磁式谐波传动中柔轮在电磁场力作用下的变形规律；并针对其应力位移场与电磁场耦合的特点，分析了变形对其磁场作用的影响。

An arbitrary shaped line current on a horizontal plane is divided into many small line segments and approximated by Hertzian diploes, then both the near and far EM-field of the line curennt is approximated by the summation of the complete near and far fields of Hertz dipoles.

水平面上任意形状线电流分割为许多小段之电流，每一小段之电流近似为赫芝偶极，则在三度空间任意座标平面上无论远近之电磁场即可以赫芝偶极之远近完整电磁场加总合成近似之。

With the development of electrical technology, the possible health hazard of exposure to ELF fields has become an issue of considerable public concern, particularly, the association between exposure to ELF fields and the risk of cancers.

随着电力事业的发展和家用电器的日益普及，极低频电磁场的健康危害已经引起公众的广泛关注，尤其是极低频电磁场暴露与肿瘤的危险度关系。

Based on the analysis of scaling and anti scaling mechanism, the feasibility of applying high frequency electro magnetic field in the ash removal system in power station together with other physical anti scaling technologies in water treatment has been discussed.

从结垢机理、防垢机理出发，并结合其他物理防垢技术，通过在某电厂的高频电磁场试验研究，阐明高频电磁场在电厂除灰系统中应用的可行性，同时提出了在应用和研究中需注意的问题和建议。

This change in polarity causes the magnetic field in front of the train to pull the vehicle forward, while the magnetic field behind the train adds more forward thrust.

这种极性的变化导致列车前方牵引列车前进的电磁场，同时列车后面的电磁场加上了更多的向前推力。

Because the sensors in the electromagnetic field are large, the temperature of the micro hot spot cannot be measured.

但在实际的应用中，对于谐振腔内部的电磁场分布和温度分布的测量是比较困难的，需要将多个感应探头放置于反应场中进行感应测量，而感应器本身的介入对电磁场分布和温度分布就产生了改变，并且宏观的感应器是不可能测试出微观中存在的局部点的过热现象。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。