电磁场

Using the transform relation connecting time domain and frequency domain and the constitutive relation,the differential equations of double negative material is obtained.

由双负介质的本构关系出发，利用时频转换关系，推导出了描述双负介质中电磁场与电磁流的微分方程组。

According to the boundary relations of the electromagnetic field, and based on the phenomena of double refraction and double reflection in crystals, the reflectivity and transmissivity are deduced at boundary when an extraordinary beam is incident from an isotropic medium upon a crystal or from a crystal to an isotropic medium with optical ax.

为分析非常偏振光在晶体表面的能量损耗，给出一种求解反射率和透射率的方法，即根据电磁场的边值关系以及晶体的双折射和双反射现象，求解晶体光轴在入射面内时，非常偏振光从各向同性介质入射到晶体和从晶体出射到各向同性介质两种情况的反射率和透射率的方法，并给出反射率和透射率的解析解，同时得到对于晶体光轴在入射面内的情况，光轴的取向对非常偏振光反射率的大小几乎没有影响，但对产生全反射的临界角θc影响较大的结论。

Electromagnetic field : Property of space caused by the motion of an electric charge.

电磁场由于电荷的运动所造成的一种空间特性。

Objective:To investigate the inhibiting effect of low-frequency electric magnetic field in different intensity and time on the proliferation of arterial smooth muscle cells.

目的：探讨不同场强、不同作用时间的低频电磁场对兔主动脉平滑肌细胞增殖的调控作用。

With the development of science and technology,the electric or electronic equipments are used more and more extensive,space electric magnetic field intensity increase sharply.

随着科学技术的发展，电气电子设备应用越来越广泛，空间辐射功率也越来越大，空间电磁场强度急剧增加。

Fundamental equation of earth induced electromagnetic field is deduced,the relationships between electric and magnetic fields in uniform medium and one-dimension layered medium are established respectively,calculation method of earth surface electric field based on geomagnetic storm data is put forward.

3建立了均匀媒质和一维层状媒质中大地感应电磁场模型，提出了基于磁暴数据和大地电性结构参数的地面感应电场计算方法塑料托盘。

Its basic ingredients are fields, among them the electric and magnetic fields of 19th-century electrodynamics.

它的基本因素是"场"，其中有19世纪电动力学中的电磁场。

I also selected physics fundamentals such as Electrodynamics, Quantum Theory and Electromagnetic Field Theory.

为了加强自己的物理基础，我也选了例如电动力学，量子理论，电磁场理论等基础物理课。

This process involves using a magnetic coil to generate electromagnetic fields in the brain tissue.

这一实验过程是通过磁线圈在人的大脑组织中产生电磁场。

This work presented a method for computation of magnetic resonance imaging coil excited electromagnetic fields inside the human head.

介绍一种磁共振成像系统线圈激励下的人体头部电磁场计算方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。