雜訊噪音比 sn ratio: 信噪比sn-ratio: sn比apparent signal to noise ratio: 視在質(zhì)量噪聲比available signal-to-noise ratio: 可用信號(hào)噪聲比; 可用訊號(hào)對(duì)雜音比carrier signal to noise ratio: 載波信噪比下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯