“radio-frequency spectrum”例句

单词 radio-frequency spectrum
例句 DEFINITIVE EXAMPLES 权威例句〔radio spectrum〕The entire range of electromagnetic communications frequencies, including those used for radio, radar, and television; radio-frequency spectrum.无线电频谱:电磁通讯频率的整个范围,包括那些用于无线电、雷达和电视的频率;无线电频谱美国传统

 

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