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；
The electric field, magnetic field and electromagnetic force have better penetrated ability but less near-wall strength whiles the propulsion units of wider magnetic poles.
电磁条带较宽的推进单元体所激发的电场，磁场和电磁力都具有更好的渗透效果，但相应同深度场强值较小。
Highaltitude electromagnetic pulse (HEMP) has the characteristics of a wide coverage and high peak field strength, which poses a serious threat to the electronic devices.
高空核爆电磁脉冲(HEMP)具有覆盖范围广、峰值场强高等特点，对电子设备构成严重威胁。
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