dnc直接数字控制

dock船坞

dockyard造船厂

dog clutch牙嵌离合器牙嵌离合器

dog coupling爪形联轴节

dog driver车床夹子

dog headed spike狗头钉

dog spike钩头道钉

dolly铆钉撑锤

dome lamp天棚灯

domestic refrigerator家用冰箱

domestic robot家庭用福利机扑

donkey boiler辅助锅炉

door switch门锁开关

doppler effect多普勒效应

dosemeter剂量计

dosimeter剂量计

dosing pump计量泵

dot and dash line点划线

dot printer点唤打印机

dotted line点线

double acting双动的

double acting compressor双动压缩机

double acting cylinder双酌汽缸

double acting engine双酌发动机

double acting hammer双动锤

double acting piston双动活塞

double acting press双动压力机

double acting pump双动泵

double acting steam engine双动式蒸汽机

double angle milling cutter双角铣刀

double arm robot双臂式机扑

double bank radial engine双排星型发动机

double beat valve双座阀

double block brake双闸瓦制动器

double caliper双用卡钳

double callipers双用卡钳

double chain conveyor双链运输机

double column vertical lathe双柱立式镗床

double concave lens双凹透镜

double convex lens双凸透镜

double crank press双曲轴压力机

double cut file双纹锉

double cutting planer取向切销门刨

double cylinder双汽缸的

double cylinder engine双缸发动机

double deck bus双层公共汽车

double deck coach双层客车

double deck screen双层筛

double drum hoist双滚筒提升机

double ended spanner双头扳手

double ended wrench双头扳手

double expansion engine二次膨胀式蒸汽机

double helical gear人字齿轮

double helical tooth人字齿

double hook双钩

double hookes joint双万向节

double housing planer双柱龙门刨床

double pipe condenser套管式冷凝器

double reduction gear两级减速装置

double roll crusher双滚筒碎石机

double row ball bearing双列滚珠轴承

double row radial engine双排星型发动机

double row riveting双排铆接

double seated valve双座阀

double shear rivet双剪铆钉

double shoe brake双闸瓦制动器

double slider coupling十字头联轴节

double spindle milling machine双轴铣床

double stage compressor两级压缩机

double start thread双线螺纹

double strapped joint双盖板接头

double suction pump双吸泵

double t iron工字钢

double tail双尾翼

double tapered muff coupling塞勒联轴节

double threaded screw双纹螺钉

double throw crankshaft双弯曲柄

double u butt groove weld双u形对接焊

doubre block brake双闸瓦制动器

doubre shoe brake双闸瓦制动器

dovetail燕尾

dovetail groove燕尾槽

dovetail guide燕尾导轨

dovetail joint燕尾接合

dowel pin定位销

down current下降气流

down gate直浇口

down milling顺铣

down sprue直浇口

down time故障时间

downcast pipe降水管

downcomer降水管

downdraft向下通风

downhill casting上铸法

dozer推土机

draft吃水;通风

draft gage通风计

draft gear牵引装置

draft regulator电器

drafting绘图

drafting machine制图机

draftsman绘图员

drag阻力

drag chain conveyor刮板式运输机

drag coefficient阻力系数

drag cup tachometer拖杯形转子测速表

drag flask底箱

drag link转向纵拉杆

drag over mill二辊不可逆式轧机

dragline拉朔式挖土机

dragline bucket拉随斗

drain排出

drain cock放出开关

drain line排水管路;连线道

drain pipe放出管

drain plug排出塞

drain pump排水泵

drain tube放出管

drain valve排水阀;排出阀

drainage排出

drainage pump排水泵

drainage screen脱水筛

draw gear牵引装置

drawbar牵引杆

drawbench拉拔机

drawing回火

drawing board画图板

drawing die拉模

drawing furnace回火炉

drawing ink制图墨

drawing instrument绘图仪器制图仪器

drawing machine拉拔机

drawing number图纸号

drawing office绘图室

drawing paper绘图纸

drawing pen绘图笔

drawing press拉拔式压床

drawing table绘图桌

drawing temperature回火温度

drawings list图纸目录

drawn tube拉制管

dredge挖泥机

dredge pump泥浆泵

dredging疏浚河道

dredging bucket挖泥机挖斗

dredging pump泥浆泵

dresser修钎机

dressing修整
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