double beta decay：雙貝他衰變

double bond 雙鍵 | double beta decay 雙貝他衰變 | double bed system 復(fù)床式;復(fù)床系

double blackwall hitch：雙花鉤結(jié)

double blackwall hitch 雙鉤結(jié) | double blackwall hitch 雙花鉤結(jié) | double blast 雙重音汽笛

double-end block plane：雙向刨

double-edge milling cutter 二面刃銑刀 | double-end block plane 雙向刨 | double-end knife colter 翻換式直犁刀

double-entry book-keeping：復(fù)式記帳

double entry accounting system 復(fù)式簿記記帳法 | double entry book-keeping 復(fù)式記帳 | double entry bookkeeping 復(fù)式簿記

double-entry bookkeeping：復(fù)式薄記

double entry復(fù)式分錄,復(fù)式記帳 | double-entry bookkeeping復(fù)式薄記 | double income tax relief免除雙重所得稅

Double Bottoms：兩- 雙谷底 港- 雙重底 臺(tái)- 雙重底;W底

double barrelled bond 兩- 雙重?fù)?dān)保債券 | double bottoms 兩- 雙谷底 港- 雙重底 臺(tái)- 雙重底;W底 | double declining balance 港- 雙重餘額遞減法 臺(tái)- 倍率遞減法

Double Bottoms：雙層底

double bottomed hull 雙底殼 | double bottoms 雙層底 | double bowed vessel 兩頭船(船的兩端一樣

double bowline：雙套結(jié)

double bowed vessel 兩頭船(船的兩端一樣 | double bowline 雙套結(jié) | double braid covering 雙層編織包皮

double bowstring truss：雙弓弦桁架

double bounce technique 二次反射法 | double bowstring truss 雙弓弦桁架 | double bracing 雙支撐

double-end box spanner：雙頭套簡(jiǎn)扳手

double-circuit 雙回路的 | double-end box spanner 雙頭套簡(jiǎn)扳手 | double-filament (燈泡)雙絲的