场与波
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Electromagnetic Fields and Waves 电磁场与电磁波
Electromagnetism Fields and Waves 电磁场与电磁波
fields and waves
以上为机器翻译结果，长、整句建议使用 人工翻译 。
That conundrum was solved by getting the high-frequency signals to penetrate deeper using alternating waves of electric and magnetic fields.
ENGADGET: Stanford researchers make heart implant powered by radio waves, put batteries out of a job
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