In the end, the propagation of cylindrical wave in free space, and the hollow cylinder scattering characteristics in near field and far field is completed when it is initiated by cylindrical wave.

最后，模拟了柱面波在自由空间中的传播及空心圆柱体在柱面波入射下的近场和远场散射特性。

youdao

Method of calculations for electron beam comtours including the effect of space charge was derived from the field free of space charge.

讨论如何由无空间电荷存在的场求空间电荷作用下电子注的包迹。

youdao

This paper presents a digital method to calculate the EM response of a three-dimen-tional conducting permeable body which is subjected to an alternating magnetic dipole field in free space.

本文提出一种关于自由空间三维导电导磁体在谐变磁偶极场中电磁响应的数值计算方法。

youdao

The Monitor Group, a Boston consultancy, offered free office space and field work.

FORBES: The Matchmaker