double grip garter 双钩吊袜带

double groove continuous extruding machine 双槽连续挤压机

double handle incense burner 双把香炉

double handle pipe wrench 双柄管子钳

Double Happiness biscuit 双喜饼干

Double Happiness brand vinegar 双喜牌陈醋

Double Happiness cigarette 红双喜牌香烟

Double Happiness cream sweet 双喜奶油糖

Double Happiness crisp 双喜酥

double hat 双层毡帽

double hearth furnace 双膛炉

double helical gear planer 人字齿轮刨床

double helical gear 人字齿轮

double helical mixer 双螺浆混合器

double helical pinion 人字小齿轮

double helical spring 复式螺旋弹簧

double helical spur gear 人字正齿轮

double heterojunction laser diode 双异质结激光二极管

double heterojunction laser 双异质结激光器

double hexagon ring end adjustable wrench 六角柄端活扳手

double hexagonal pyramid 六角双锥

double hook chain 双钩吊链

double hook 双钩吊钩

double hopper automatic feeder 双斗自动给料机

double hopper feeder 双棉箱给棉机

Double Horse electric fan 双马牌电扇

double horsehide leather strop 双层马皮革砥

double housing planer 龙门刨床

double housing surface grinding machine 龙门式平面磨床

double image prism 双像棱镜

double induction regulator 双感应式调压器

double injector 双管喷射器

double inlet fan 双进口风机

double insulated universal hand electrodrill 双重绝缘通用手电钻

double ionization gauge 双电离压力计

double iron plane 双刃刨

double jack 双塞孔

double jaw head wrench 双卡头扳手

double jaw pattern chain pipe wrench 双颚式链条管钳

double jersey 双面针织物

double kayak 双人皮艇

double kernel cake 双仁香酥

double key 双键

double knife noodle pressing machine 双刃压面条机

double knit circular knitting machine 双面圆纬机

double knit machine 双面针织机

double knit wool hat 双股针织绒线帽

double knit 双面针织物

double knitting wool 粗绒线

double lathe 复式车床

double layer core dispersion-shifted single-mode fiber 双层纤芯色散位移单模光纤

double layer fibre 双层型纤维

double layer fluorescent screen 双层荧光屏

double layer iron sheet electric furnace 双层铁皮电炉

double layer lens 双层透镜

double layer winding 双层绕组

double layer-stenter 双层拉幅机

double lead cable 双芯铅包电缆

double lens 双透镜

double lever safety valve 双杠杆安全阀

double lift double cylinder jacquard 复动式双花筒提花机

double lift jacquard 复动式提花机

double lift single cylinder jacquard 复动式单花筒提花机

double limiter 双重限制器

double line pen 画双线笔

double locked stitcher 双线锁边机

double loop-sheet testing machine 双卷层薄板试验机

double Macarthy gin 复式麦卡赛轧棉机

double magnet gun 双磁铁电子枪

double manipulator 双面推床

double mantle lantern 双头纱罩汽油灯

double microscope 双筒显微镜

double milled fabric 双缩绒织物

double milling machine 双轴铣床

double mitre saw 双斜角锯

double monochromator 双单色仪

double moquette 双面毛圈毛绒织物

double motion agitator 双动搅拌器

double motion mixer 双动拌和器

double motion paddle mixer 双动桨叶式拌和机

double motion turbine 双动式汽轮机

double motor alternator 双电动交流发电机

double mould-board ridging plough 双壁起垄犁

double needle bar fabric 双面针织物

double needle bed machine 双针床针织机

double needle loom 双导纬针织带机

double non-return valve 双止回阀

double nozzle 双头喷嘴

double nozzled rocket engine 双喷管火箭发动机

double nuclear resonance magnetometer 双重核共振磁力仪

double oblique shade bracket light 双斜罩壁灯

double observer rangefinder 双观测者型测距仪

double offset ring spanner chrome plated 镀铬梅花扳手

double offset ring spanner with ratchet 棘轮梅花扳手

double offset ring spanner 梅花扳手

double open end screwdriver 双头螺丝起子