?干燥室    drying room

?回转干燥筒    drying tumbler

?干度    dryness

?干度因子,干度率    dryness factor

?干度因子,干度率    dryness factor (or fraction)

?丹麦国家标准    DS (= Dansk Standard, Denmark)

?强度减少率    DSR (= damaged strength rating)

?东德验船协会    DSRK (= DDR-Schiffs- Revision und Klassifikation)

?东德验船协会    DSRK (= DDR-Schiffs-Revision und Klassifikation)

?潜水救助艇    DSRV (= deep submergence rescue vehicle)

?钻头杆试验    DST (= drill stem test)

?深海潜水艇    DSV (= deep submergence vehicle)

?潜水支援船    DSV (= diving support vessel)

?英国技术发展委员会    DTD (= Directorate of Technical Development, U.K.)

?复式空气泵    dual air pump

?双船级    dual class

?双燃循环    dual combustion cycle

?双循环    dual cycle

?双面风管    dual duct

?双燃料    dual fuel

?双塞点火    dual ignition

?双泵    dual pump

?两用货轮    dual purpose ship

?双串行联结式减速齿轮    dual tandem articulated ( or locked train) type reduction gear

?双电压直流系统    dual voltage DC system

?双燃料引擎    dual-fuel engine

?轻帆布    duck

?细帆布    duck canvas

?帆布盖    duck cover

?杜克勒性钢    Ducol steel

?箱形龙骨    duct keel

?管阻损失    duct loss

?导筒螺桨    duct propeller

?导罩螺桨    ducted propeller

?延性材料    ductile material

?延性钢    ductile steel

?延性    ductility

?粗布袋,帆布袋    duffel (or duffle) bag

?哑罗经    dumb card (or pelorus)

?餐用升降机    dumb waiter

?仿真天线    dummy antenna (or phantom antenna)

?仿真线圈    dummy coil