[通信] 中頻帶寬 bandwidth, frequency: 頻率頻寬frequency bandwidth: 頻帶寬度; 頻率帶寬; 頻率頻寬frequency, intermediate (if): 中頻if ( intermediate frequency ): 中頻if intermediate frequency: 中頻下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯