ads abbr. area, date, subject 地區(qū); air defense system 防空系統(tǒng); advance data system 高級數(shù)據(jù)系統(tǒng); accessory drive system 附屬驅(qū)動系統(tǒng) n. 廣告( ad的名詞復數(shù) ); (administration) 管理; (advance) 預付; (addendum) 附錄
deriving v. 得到( derive的現(xiàn)在分詞 ); (從…中)得到獲得; 源于; (從…中)提取
adu abbr. acceleration-deceleration unit 加速度-減速度單位; accessory dwelling unit 附屬住所單位; accumulation-distribution unit 積累-分發(fā)單位; analog-to-digi tal (conversion) unit 模擬-數(shù)字(轉(zhuǎn)換)單元