许多耳机的线可以当做天线，将电磁辐射传播到你的头部。
The wire on many headsets can act as an antenna, which can deliver a dose of electromagnetic radiation to your head.
TL690折叠式FM/AF数字显示无线耳机采用的是电磁换能技术作为电声转换方式。
TL690 the foldaway FM/AF numeral demonstrated the wireless earphone uses the electromagnetism trade technology as the electroacoustical transformation way.
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