而卡上电路的工作电源由读卡器发出的电磁波能量提供。
The power of IC card circuit is supplied by the power of electromagnetic wave from reader.
解，推导出电磁波能量衰减与电磁波频率和等离子体密度的关系式。
B solution, the function of wave attenuation, wave frequency and plasma density is deduced.
断层落差、断面倾角、断层形态以及断层带宽度与电磁波能量的衰减有密切的关系。
The displacement, inclination, shape and width of fault are closely relative to the decrement of electromagnetic wave energy.
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