double cylinder diaphragm pump 双缸隔膜泵double cylinder engine 双汽缸发动机double cylinder jacquard machine 双针筒提花针织机double cylinder jacquard 双滚筒提花机double cylind...
double-tube heat exchanger 套管热交换器double-tube injector 双管喷射器double-tube pressure gauge 双管压力表double-tube reactor 双套管反应器double-tube washing machine 双桶洗衣机...
double-row spherical ball bearing 双列球面球轴承double-screw continuous mixer 双螺杆连续混合机double-screw conveyor 双螺杆输送机double-screw extruder 双螺杆挤出机double-screw mi...
double-flow reheat-condensing steam turbine 双流再热冷凝式汽轮机double-flow type boiler 双流式锅炉double-flue boiler 双炉胆锅炉double-frequency generating set 双频发电机组doubl...
double-crank ward cot 双摇柄病床double-cross leno 全绞式纱罗double-current generator 双流发电机double-current key 双流电键double-current relay 双流式继电器double-cut file 双纹锉d...
drawing and writing appliance 书画用品drawing apparatus 绘图仪器drawing appliance 绘图用具drawing bench 绘图桌drawing board 绘图板drawing book 图画本drawing compass 绘图圆规dr...
dragline cableway excavator 吊斗挖掘机dragline excavator 拖铲挖土机dragline scraper 带式刮土机dragline tower excavator 塔式拖铲挖掘机dragline 索斗挖土机dragnet 拖网dragon boat 龙船d...
down-proof fabric 防羽绒刺出性织物down-stroking press brake 下冲程折弯机down-the-row thinning machine 顺行间苗机down-the-row thinnner 顺行间苗机downcomer 降液管downdraft boiler ...
doughnut coil 环形线圈doughnut fibre 中空纤维doughnut tyre 超低压轮胎doughnut 炸面圈Douglas aircraft 道格拉斯飞机Douglas fir 花旗松doulateral winding 蜂房式绕组doup heddle 绞综丝doup ...
drinking fountain 喷泉饮水器drinking paper 吸水纸drinking straw 饮用麦管drinking ware 水具drinking water boiler 开水锅炉drinking water circulation pump 饮用水循环泵drinking w...