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 mixer 双螺杆混合器

double-screw open and close machine 双螺杆式启闭机

double-screw plastic extruder 双螺杆塑料挤压机

double-screw plodder 双螺杆压条机

double-screw pump 双螺杆泵

double-screw reactor 双螺杆反应器

double-screw tuner 双螺旋调谐器

double-seat stop valve 双座截止阀

double-seat valve 双座阀

double-section filter 两节滤波器

double-shared double wheeled plow 双轮双铧犁

double-shed jacquard 双梭口提花机

double-side carbon paper 双面复写纸

double-side cementing machine 双面粘合机

double-side coated art printing paper 双面铜版纸

double-side hacksaw blade 双面刃钢锯条

double-side milling cutter 两面铣刀

double-side planer 双面刨床

double-side saw 双面锯

double-side sealing machine 双边封口机

double-side terry fabric knitting machine 双面毛圈织物针织机

double-side tipping wagon 双边倾卸车

double-side wood planer 双面木工刨床

double-sideband signal generator 双边带信号发生器

double-sideband suppressed carrier modulator 双边带抑制载波调制器

double-sideband transmitter 双边带发射机

double-sided automatic blanking and forming press 双边自动冲压和成形压机

double-sided board 双面板

double-sided compressor 双面进气压气机

double-sided diskette 双面软盘

double-sided drawing press 双边拉压机

double-sided floppy 双面软磁盘

double-sided four-point press 双边四点压力机

double-sided high speed press 双柱高速压力机

double-sided khaki 双面卡其布

double-sided loop pile fabric 双面毛圈起绒织物

double-sided needling loom 双面针刺机

double-sided plate trimming shears 双边修边剪切机

double-sided plush 双面绒

double-sided printed circuit board 双面印刷电路板

double-sided socket 双向插座

double-sided spinning machine 双面纺丝机

double-sided transfer presses 双点传输压力机

double-size wash tub 双料大型洗衣盆

double-skip hoist 双翻斗卷扬机

double-speed electric hoist 双速电升降机

double-speed manual hydraulic press 双速手动液压机

double-speed synchronous motor 双速同步电动机

double-spindle contour copying milling machine 双轴平面仿形铣床

double-spindle hammer crusher 双轴锤式轧碎机

double-stage air pump 双级空气泵

double-stage ammonia refrigerating machine set 双级氨制冷机组

double-stage compressor 双级压缩机

double-stage turbine 双级涡轮机

double-stage vortex pump 双级旋涡泵

double-step vortex dust remover 双级涡旋除尘器

double-strand mill 双线轧机

double-strand pig machine 双链式铸铁机

double-strand winder 双束绕丝机

double-stroke solid-die automatic cold header 双击整模自动冷镦机

double-stub tuner 双短线调谐器

double-suction centrifugal pump 双吸离心泵

double-suction pump 双吸泵

double-suction ventilator 双吸口通风机

double-surface transistor 双面晶体管

double-surface wood planer 双面木工刨床

double-swiveling uncoiler and recoiler 并列回转式开卷-卷取机

double-table transfer printing press 双面转移印花压烫机

double-tariff system meter 双价制计

double-thickness sheet glass 双厚窗玻璃

double-thread hob 双头滚刀

double-throw crank-shaft 双弯曲轴

double-throw disconnecting switch 双掷隔离开关

double-throw switch 双掷开关

double-tip baler 双嘴打包机

double-tool cross-slide 双刀横向滑板

double-tool holder 双刀刀架

double-trace scope 双迹示波器

double-track skip hoist 双料斗卷扬机

double-transit oscillator 双渡越振荡器

double-tread tyre 双胎面轮胎

double-trough type mixer 双槽式拌和机

double-tube biologic microscope 双筒生物显微镜

double-tube bracket light support 双筒壁灯架

double-tube converter 双套管转换器

double-tube core barrel 双筒取心筒