数字: figure; digit; numeral; char ...回溯: recall; look back upon数字回声探测: digitized echosounding数字回声信息: digital echo information数字回声抵消器: digital echo canceller数字回声记数系统: digital echo counting system数字回声消除器: digital echo canceller数字回声抑制器: digital echo suppressor数字回转打印机: number revolving stamp回溯: recall; look back upon 回溯战争年代 look back upon the years of war; 回溯法 backtracking method; 回溯操作 back tracking operation; 回溯集 retraceable set; 回溯验证 back forecasting标准数字回波抑制器: normal digital echo suppressor数字回声测深仪显示: digital echo sounder display同步数字阶层光数字回路载波: optical/digital loocarrier equipment同步光纤网络光数字回路载: optical/digital loocarrier equipment回溯到: date back to; trace back to回溯点: backtracking point回溯法: backtracking回溯集: retraceable set回溯至: date back十字回转门: turnstile斜x字回纹: diamond fret雁字回时: when swans come back in flight逐字回忆: verbatim recall编年回溯: chronological backtracking并行回溯: parallel backtracking
