The longitudinalcurrent of both conduction current and displacement current make no contributions to the magnetic field.
传导电流和位移电流的纵向分量对磁场无贡献。
2
These solutions belong to the intrinsic electromagnetic vortices, the corresponding magnetic field perturbations and the longitudinalcurrent are continuous on the boundary of the vortex.
这些解属于本性电磁涡旋，对应的扰动磁场和纵向电流在涡旋边界上是连续的。
3
It is described a cathodic protection system of reinforced concrete structures with discrete anodes obtained starting from a corrugated planar substrate welded to a longitudinalcurrent collector.