And the last one tells you how the curl of the magnetic field is caused by motion of charged particles.
2
根据实验结果，利用电磁学理论，分析了由于裂纹尖端电荷的加速运动所激发的电磁场强度及其频谱特性。
Based on the electromagnetic theory the relation between the acceleration movement of electric charge in the crack tip end, the value of electromagnetic field and the spectrum are analyzed.
3
磁场对运动电荷的作用洛伦兹力。
The function magnetic field impose on the electric charge.
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