electromagnetic field intensity

例句：

1. 1.The intensity of the electromagnetic field is measured in terms of its strength.
   电磁场的强度用其强度来衡量。
2. 2. The intensity of the magnetic field is directly proportional to the strength of the current flowing through it.
   磁场的强度与通过它的电流强度成正比。
3. 3.The intensity of the electric field can vary greatly depending on the distance between the charges.
   电场强度可以根据电荷之间的距离有很大的变化。