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单词 Waves,Radio
释义

Waves,Radio

《英文msh词典》Waves,Radio
[入口词] Waves,Radio
[主题词] Radio Waves
[英文释义] That portion of the electromagnetic spectrum beyond the microwaves,with wavelengths as high as 30 KM. They are used in communications,including television. Short Wave or HF (high frequency),UHF (ultrahigh frequency) and VHF (very high frequency) waves are used in citizen's band communication.
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更新时间:2026/6/20 23:14:29