Maxwell's equations conserve certain properties-the magnetic field intensity, the electric displacement field and the Poynting vector that describes the electric flux of an electromagnetic field.
麦克斯韦方程中有某些特性是恒定不变的——磁场强度、电位移场以及描述电磁场电通量的坡印廷矢量。
Although the description of the system involves the electromagnetic potential, the physical properties only depend on the electric and magnetic field-strength.
结果表明，虽然对体系的描述涉及到电磁势，但体系的物理性质只依赖于电场和磁场的强度；
As a new kind of carbon materials, carbon nanotubes have attracted tremendous interest because of their unique structural, mechanic, electric, magnetic and optical properties.
碳纳米管是一种新型的碳材料，具有特殊的结构，独特的力学、电磁学和光学性质，已引起人们的极大兴趣。
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