比例數(shù)據(jù) ratio data: 比例數(shù)據(jù)data constant ratio code: 定比數(shù)據(jù)代碼data rate-to-bandwidth ratio: 信道頻帶利用率data transmission utilization ratio: 數(shù)據(jù)傳輸利用率; 數(shù)據(jù)傳輸效率data-rate to bandwidth ratio: 信道頻帶利用率下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯