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direct solar radiation｜太阳直接辐射rn
direct…contact heat exchanger｜汽水混合式换热器rn
direct…fired lithium bromide absorption…type refrigerating machine｜直燃式溴化锂吸收式制冷机rn
dirigible｜可操纵的rn
disassemble｜拆卸rn
disassembly｜拆卸；分解；解体rn
discharge｜排出rn
discharge branch｜排水支管rn
discharge pressure｜排气压力rn
discharge temperature｜排气温度rn
discharging tube｜出＇泄＇水管；排放管rn
disconnecting chamber｜隔离室；检查井rn
disequilibrium｜失去平衡rn
dismountable｜可拆卸的；可更换的rn
dispersion｜大气扩散rn
displacement ventilation｜置换通风rn
disposable air filter｜一次性空气过滤器＇滤料不能再生；但用后可拆除的空气过滤器＇rn
dissipate｜驱散rn
dissolubility｜可溶解度rn
dissoluble｜可溶的；能溶解的；可解除的rn
distance between centers｜中心间距rn
distributary｜支＇分＇流rn
distribute｜分配rn
distributing｜分配rn
distributing air flow｜分配气流rn
distributing air pressure｜分配室rn
distributing chamber｜分配室rn
distributing conduit｜分配管rn
distributing duct｜分配风道rn
distributing main｜配水干管rn
distributing net｜配水管网rn
distributing pipe｜分配管rn
distributing plate｜分水板，分配板rn
distributing system｜分配系统，配水系统rn
distribution｜分配＇布＇；配电rn
distribution box｜配电箱rn
distribution coefficient｜分配系数rn
distribution district｜分配区rn
distribution graph｜分配曲线rn
distribution grid｜配水管网；配电网rn
distribution header｜分配总管；分配站＇在一个蒸发器的几个管组间分配制冷剂的装置＇rn
distribution main｜分配干管rn
distribution of blast｜送风分配rn
distribution of demand｜用量分配rn
distribution of heat｜热分布rn
distribution of heat flux｜热流分布rn
distribution pipe｜配水管rn
distribution pressure｜配水压力，分布压力rn
distribution substation｜配电所＇分站＇rn
distribution system｜配水＇分配＇系rn
distribution system of water supply｜配水管网rn
distribution valve｜分配阀rn
distribution zoning｜分区配给rn
distributive effect｜分配效应rn
distributor｜分配器，分配站＇见distribution header＇；分流器rn
district boiler room｜区域锅炉房rn
district cooling｜区域供冷rn
district heat supply｜区域供热rn
district heating｜区域供热rn
disturbance｜扰动，干扰；故障rn
disturbance of balance｜平衡破坏＇扰乱＇rn
disturbing frequency｜干扰频率rn
dome of boiler｜锅炉聚汽室rn
domestic building｜居住房屋rn
domestic oil burner｜家用油燃器rn
dominant wind direction｜最多风向rn
donkey boiler｜辅助锅炉rn
Dorin｜多菱压缩机rn
double｜加倍；重复；两倍的rn
double bend｜（S形的）双弯头rn
double bundle condenser｜双管簇冷凝器rn
double cage motor｜双鼠笼式电动机rn
double casing｜双层外壳rn
double chamber furnace｜双室炉膛rn
double condenser type centrifugal heat pump chiller｜双重冷凝式离心热泵冷冻机rn
double contact freezer｜双面接触式冻结装置＇货物在两个冷却表面之间被接触冻结的一种冻结装置＇rn
double cylindrical boiler｜双汽包锅炉，双锅锅炉rn
double deflection grille｜双层百叶风口rn
double deflection model｜双向型rn
double deflection register｜双层百叶风口，双向调风器rn
double deflection side…wall grille｜侧墙双层百叶风口rn
double deflection supply grille｜双向百叶送风口rn
double drum boiler｜双锅筒式锅炉rn
double duct mixing box｜双风道混合箱rn
double duct system｜双风道系统rn
double elbow pipe｜S形管rn
double furnace｜双炉膛rn
double furnace boiler｜双炉膛锅炉rn
double glazing｜双层玻璃＇在同一框架上，装有两层玻璃，其两层玻璃间为空气或为气体或为真空＇rn
double glazing window｜双层玻璃窗rn
double groove weld joint｜双面坡口焊缝rn
double hood｜双重通风罩rn
double hung windows｜上下推拉窗rn
double inlet centrifugal fan｜双进口风机＇空气可由叶轮两侧吸入的离心风机＇rn
double loop｜双圈环管rn
double nuts｜双螺帽rn
double offset U bend｜双U形膨胀接头，S形弯管rn
double outdoor｜双重外门rn
double pipe condenser｜套管式冷凝器rn
double regulation valve｜调节器rn
double reheat｜二次再热rn
double reheat cycle｜二次再热循环rn
double response controller｜双重作用的控制器rn
double rise pipe｜双立管＇从蒸发器引出两根垂直管接到总回气管上的配管方式＇rn
double seat valve｜双座阀rn
double shell｜双壳的rn
double shell type absorption refrigerating machine｜双壳式吸收制冷机rn
double shift｜二班制rn
double side hood｜双面风罩rn
double size｜双倍尺寸rn
double spacing finned cooler｜双片距冷却器＇由翅片管组成的空气冷却器，其片距在空气出口处比入口外为小＇rn
double strength｜强力的，加强的rn
double suction｜双吸式rn
double suction pump｜双吸式泵rn
double suction riser｜双吸式立管，双升管＇制冷系统中一种即使在最小负荷下都能回油的两根立式吸入管理体制＇rn
double tee｜四通rn
double threaded screw｜双纹螺丝rn
double tube thermometer｜内标尺式温度计rn
double type heat exchanger｜套管式热交换器rn
double undulated preheater｜双波纹板预热器rn
double wall｜夹层墙rn
double walled boiler｜双层壁锅炉rn
double window｜双层窗＇分别安装两个单独框架的窗，两层之间为空气层＇rn
double Y｜斜叉四通rn
double…acting｜双动的，双作用的rn
double…acting pressor｜双动压缩机rn
double…acting pump｜双动泵rn
double…arch furnace｜双拱炉膛rn
double…barrelled｜双筒＇管＇的rn
double…effect absorption refrigeration machine｜双效吸收式制冷机rn
double…effect lithium…bromide absorption…type refrigerating machine｜双效溴化锂吸收式制冷机rn
double…ended boiler｜双炉门式锅炉rn
double…flow｜双流的；二通量的rn
double…flow induced…draft｜双流诱导式通风rn
double…flue boiler｜双火筒锅炉rn
double…header boiler｜双联箱锅炉rn
double…jointed｜可以多方向自由活动的rn
double…pipe｜套＇双＇管的rn
double…pipe condenser｜套管式冷凝器＇由同心管组成的冷凝器，制冷剂在管间环形空隙内流动，冷却液在内管流动＇rn
double…pipe cooler｜套管式冷却器rn
double…pipe dropping system｜上分式双管系统rn
double…pipe heat tracing｜双管伴随加热法rn
double…pipe heating system｜双管供暖系统rn
double…pipe oil heater｜套管式油加热器rn
double…pipe system｜双管系统rn
double…pipe up…feed system｜下分式双管系统rn
double…return siphon｜乙字形存水弯rn
double…side…draft hood｜双面吸气罩rn
double…stage｜双级式rn
double…stage cooling thermostat tat｜双级冷却恒温器rn
double…stage cyclone｜双级旋风除尘器rn
double…stage pump｜双级泵rn
double…tube sheet｜双层管板rn
doubling｜加倍，双重；薄板折叠；加强板rn
doubling plate｜复板rn
down draft｜倒灌rn
downdraft boiler｜下部排烟锅炉rn
downdraft intermittent brick kiln｜向下抽风间歇式砖窑rn
downfeed system｜上分式系统rn
downshot burner｜下射喷燃器rn
down…stream chamber｜出口室rn
downstream spray pattern｜顺喷rn
down…stream tube｜下降管rn
downtake chamber｜下行烟道rn
draft by steam jet｜蒸汽喷射引风rn
draft chamber｜通风室，气流室rn
draft stabilizer｜气流＇抽力＇稳定器rn
draft tube｜通风管，吸入管，引流管rn
drafting board｜制图板rn
drain board｜滴水板rn
drain pipe｜排污管rn
drainability｜排放能力rn
drainable｜可排出的，可疏出的rn
drainer float chamber｜疏水器浮子室rn
drawback｜障碍，缺点；回火rn
drawback temperature｜回火温度rn
draw…in bolt｜拉紧螺栓rn
drawing No。｜图号rn
draw…tube｜伸缩管rn
driving belt｜传动（皮）带，驱动皮带rn
droplet｜液滴rn
drum baffle｜汽包挡板rn
drum boiler｜汽包锅炉rn
dry air｜干空气rn
dry and wet bulb temperature conditions｜干湿球温度条件rn
dry and