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

double-frequency generator 双频发电机

double-fried pork 回锅肉

double-furnace boiler 双炉膛锅炉

double-gate field effect transistor 双栅场效应晶体管

double-gear block 双联齿轮

double-gear cone transmission 复式锥轮传动装置

double-gear sliding block 两联滑动齿轮

double-geared headstock 双套齿轮床头

double-geared roller crusher 双齿辊破碎机

double-glazed unit 双层玻璃窗

double-glazing unit 双层玻璃窗

double-grid tube 双栅管

double-grid valve 双栅阀

double-head boxing machine 双头箱式缝纫机

double-head endmill 双头立铣刀

double-head flat scraper 双头平刮刀

double-head milling machine 双轴铣床

double-head rail 双头轨

double-head spring needle knitting machine 汗绒布二用针织机

double-head turning tool welded with carbide tip 硬质合金双头车刀

double-head tyre 双缘轮胎

double-head wire stitching machine 双头铁丝订书机

double-head wrench 双头扳手

double-headed bolt tension meter 双头螺栓张力计

double-headed camera 双头摄影机

double-headed spray gun 双口喷枪

double-headed tube bender 双头弯管机

double-header boiler 双筒式水管锅炉

double-heterostructure junction laser 双异质结激光器

double-high rolling mill 双辊式轧机

double-hook oil ring 双刃刮油环

double-horizontal-shaft forced type concrete mixer 强制式双卧轴混凝土搅拌机

double-hung window 双挂拉窗

double-image range-finder 双像测距仪

double-image telemeter 双像测距仪

double-impeller impact breaker 双叶轮冲击破碎机

double-impeller pump 双叶离心泵

double-input mixer 双输入混频器

double-intergrating accelerometer 二重积分加速度计

double-J bolt 双钩穿钉

double-knitted plaited fabric 双面编结添纱针织物

double-loop towel 双面毛圈毛巾

double-m-derived filter 双m推演式滤波器

double-mica spacer 双层云母垫片

double-mode cyclotron 双重加速法回旋加速器

double-optical projection stereoplotter 双镜光学投影立体绘图仪

double-pass spectrometer 双光道分光计

double-pass wired glass machine 双加料夹丝玻璃成形机

double-pass-out turbine 双抽气式汽轮机

double-pipe exchanger 双套管换热器

double-pipe heat exchanger 双套管换热器

double-piston explosive press 双活塞爆炸压力机

double-piston 双活塞

double-plate clutch 双片式离合器

double-plunger plastic injection moulding machine 双柱塞塑料注模机

double-plunger pump 双柱塞泵

double-plunger ultramicro pump 双柱塞超微量泵

double-ply bag 双层袋

double-ply hosiery 双层袜

double-point breaker 复式断电器

double-point crank press 双点曲轴压力机

double-point double-throw switch 双刀双掷开关

double-point gear 多点啮合齿轮

double-point scriber 两端划针

double-point tool 双刃刀具

double-pointed nail 双头钉

double-pole cutout 双极断路器

double-pole double-throw switch 双刀双掷开关

double-pole fuse 双极熔断器

double-pole switch 双极开关

double-poppet throttle valve 双座节流阀

double-projection direct-viewing stereo-plotter 双投影直接观测立体测图仪

double-projection plotter 双投影测图仪

double-projection stereoscope plotting instrument 双投影立体测图仪

double-purchase winch 双辘绞车

double-purpose interchangeable tip square blade screwdriver 可换头方杆两用螺丝刀

double-range instrument 双量程仪表

double-range recording flowmeter 双量程记录式流量表

double-reheat stream turbine 二次再热式汽轮机

double-resonator klystron 双腔速调管

double-resonator 双腔谐振器

double-return valve 双回流阀

double-roll crusher 双辊破碎机

double-roller mill 双辊研磨机

double-roller stretching and letting-out machine 双辊伸展拉软机

double-rolling pipe-reducing machine 双辊缩管机

double-row self-aligning ball bearing 双列自调式球轴承