查询词典 double acting

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

double bunk：双层铺

double buffering 双重缓冲 | double bunk 双层铺 | double cap casing head 双顶套管头

double-V butt joint：双面 v 形对焊接头

double u groove 双 u 形对接坡口 | double v butt joint 双面 v 形对焊接头 | double v groove x 形坡口

steel,hypoeutectoid：亚共析钢

"steel,hypereutectoid","过共析钢" | "steel,hypoeutectoid","亚共析钢" | "steel ingot","钢锭"

midpoint tap：中心抽头=>中间抽头

midpoint rule 中点法则 | midpoint tap 中心抽头=>中间抽头 | midrange lateral acceleration handling maneuver 中等横向加速转向运动