查询词典 double back

Double Bottoms：双层底

double bottomed hull 双底壳 | double bottoms 双层底 | double bowed vessel 两头船(船的两端一样

double bowline：双套结

double bowed vessel 两头船(船的两端一样 | double bowline 双套结 | double braid covering 双层编织包皮

double bowstring truss：双弓弦桁架

double bounce technique 二次反射法 | double bowstring truss 双弓弦桁架 | double bracing 双支撑

double-end box spanner：双头套简扳手

double-circuit 双回路的 | double-end box spanner 双头套简扳手 | double-filament (灯泡)双丝的

double breasted jacket：双排钮扣上衣

雙排扣 double breasted | 雙排鈕扣上衣 double breasted jacket | 雙排鈕扣套裝 double breasted suit

double buff：双折布抛光轮

double brim calot of wool felt trimmed with feathers and with removable earlops 钉羽毛双箍活动耳遮瓜皮绒毡帽 | double buff 双折布抛光轮 | double buffing machine 复式抛光机

double-deck bull block：双层鼓轮

双层鼓轮拉线机 double-capstan wire drawing machine | 双层鼓轮 double-deck bull block | 双层拉线鼓轮 double-deck drawing block

double bunk bed：双层床

double bulb-ended probe 双球头探针 | double bunk bed 双层床 | double button carbon microphone 双钮炭精盒传声器

double bunk：双层床

646 双层舱壁 double bulkhead | 647 双层床 double bunk | 648 双搭板 double butt strap

double bunk：双层辅

double bunk 双层床 | double bunk 双层辅 | double bus 双汇流排

the bird of wonder：凤凰;长生鸟

the bird of peace鸽子 | the bird of prey 猛禽 | the bird of wonder凤凰;长生鸟

flange rail：平底轨条

"凸缘皮带轮","flange pulley" | "平底轨条","flange rail" | "凸缘肋","flange rib"