wave field equation

By means of the relativistic space charge wave theory, the space charge wave equation is obtained when the relativistic electron beam guided by a axial magnetic field is moving along the inner surface of the plasma sheet.

利用相对论空间电荷波理论，导出了相对论电子注在轴向磁场引导下沿等离子体内表面传输时的空间电荷波方程；

This technique an well cope with vertical or lateral velocity variation in medium and reduce interlayer reverberation incurred from computation because it uses two-way nonreflecting wave equation to compute seismic wave field in reverse time direction.

该方法从双程无反射波动方程出发，沿反时方向进行波场计算，使混合法偏移能够适应纵横向速度变化，并能有效地减弱计算中产生的层间混响。

Discrete wave equation updated tangential electric field value on the boundary of coarse and fine grid.

用离散波动方程更新粗细网格边界上的切向电场分量.

According to the solution for plane wave and the solution for spherical wave of the Helmhotz equation, a direct calculation of the plane wave's expansion equation in partial waves under the condition the central-field and elastic scattering, and the its significance in Physics are introduced herein.

由亥姆霍兹方程的平面波解和球面波解，直接证明了平面波在中心力场弹性散射条件下的分波展开式，并阐明了其物理意义。

The magnetic field integral equation ( MFIE) is formulated to study the electromagnetic scattering from Alpha-stable non-Gaussian metallic material surface with a time harmonic wave and a UWB pulse wave incidence.

基于磁场积分方程研究Alpha-stable非高斯分布的金属材料表面的时谐波、超宽带脉冲波的电磁散射特性。

From the standing wave equation, it is derived in this paper that energy densities at points within the wave field change with time, and except nodes and antinodes, their energy flux densities are not zero and change with time too.

本文由驻波方程导出波场中各点的能量密度随时间变化，除节点和腹点外，各点的能流密度并不为零，也随时间变化。

We point out that the equation can be approximated by a set of linear ones and the exciton polarization wave can be regarded as a Bose field only in the limit of low excitation.

我们指出只有在激发比较弱时，这组方程才可近似为一组线性方程，电子空穴极化波才可以看作玻色场。