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recuperability｜可回收性，恢复力rn
recuperator tube｜热交换管rn
red brass｜紫铜，红铜rn
red brick｜红砖rn
redistribution｜再分配rn
redistribution of pressure head｜压头的再分布rn
reducing bend｜变径弯头rn
reducing coupling｜异径管接头rn
reducing elbow｜变径弯头rn
reducing valve｜减压阀rn
reentrainment of dust｜二次扬尘rn
REFP｜意大利莱富康压缩机rn
reference book｜参考书rn
refractory belt｜卫燃带rn
refractory brick｜耐火砖rn
refractory brick work｜耐火砖结构rn
refractory chamber｜耐火炉衬燃烧室rn
refrigerant｜制冷剂rn
refrigerant distributor｜制冷剂分配器＇与热力膨胀阀联用的部件，以保证制冷剂冷剂均匀分配至蒸发器的各支路＇rn
refrigerated cabinet｜冷柜rn
refrigerating battery｜冷却管组，制冷管组＇装置在箱内的冷却盘管或冷却表面，利用风机使空气或气体循环而冷却＇rn
refrigerating chamber｜冷藏箱，冰箱rn
refrigerating coefficient of performance｜（COP）（制冷）性能系数rn
refrigerating pressor｜制冷压缩机rn
refrigerating cycle｜制冷循环rn
refrigerating effect｜制冷量rn
refrigerating effect per brake horsepower｜单位轴功力的产冷量＇单位时间内制冷装置所移去的热量与轴功力之比＇rn
refrigerating engineering｜制冷工程rn
refrigerating machine｜制冷机rn
refrigerating medium｜载冷剂rn
refrigerating plant room｜制冷机房rn
refrigerating station｜制冷机房rn
refrigerating system｜制冷系统rn
refrigeration｜制冷rn
refrigerator pressor lubricant｜制冷压缩机润滑剂rn
regenerative noise｜再生噪声rn
register｜百叶型风口rn
regulator｜调节器rn
rehabilitation｜恢复，复兴rn
reheat air conditioning system｜再热式空气调节系统rn
reimbursement｜补偿，赔偿rn
relative humidity｜相对湿度rn
relay｜继电器rn
reliability｜可靠性，安全性rn
reliable｜可靠的，可信赖的rn
reliable operation｜可靠操作运行rn
relief by…pass valve｜泄压旁通阀，安全旁通阀rn
relief damper｜泄压风门rn
remote bulb｜远设的温包rn
remote bulb thermostat｜温包远设的恒温器，温包远设的温度继电器＇温包用软管连接，并安装在远离二次仪表的地方的温度调节装置＇rn
remote control｜遥控rn
remote controller｜遥控器rn
removable｜可移动的，可拆卸的，可更换的rn
removable end cover｜可拆卸端盖rn
removable head｜可拆卸端盖rn
removal of salt by chemicals｜化学除盐rn
removal of salt by heating｜加热除盐rn
remove｜驱散rn
renewable｜可代替的，可更换的，可恢复的rn
renewable filter｜可更换的过滤器rn
repeatable｜可重复的rn
repeatable results｜有复验性的结果rn
repeated bend test｜弯曲疲劳试验rn
replaceable｜可代替的，可替换的rn
reproducibility｜再生性；再生率rn
reproducible｜能复制的，能再现的rn
resemblance｜相似性；类＇相＇似rn
residues of bustion｜炉渣；灰分rn
resistance of heat transfer｜传热阻rn
resistance thermometer｜电阻温度计rn
resistance to water vapor permeability｜蒸汽渗透阻rn
resistive muffler｜阻性消声器rn
resistivity｜比电阻rn
resonance｜共振rn
resonant frequency｜共振频率rn
resonator type absorber｜共振器型消声器，谐振消声器rn
response curve of controlled plant｜调节对象正升曲线rn
retarded bustion｜延迟燃烧rn
retarder box｜减速器，缓动装置；延时器rn
retractable soot blower｜伸管式吹灰器rn
retube｜换管；更换管子的rn
return air｜回风rn
return air flame plate｜回风百叶rn
return air inlet｜回风口rn
return bend｜180°弯头，回转弯头，U形弯头rn
return branch of radiator｜散热器回水支管rn
return fan｜回风机rn
return fir tube boiler｜回火管锅炉rn
return flame boiler｜回焰锅炉rn
return flow burner｜回油燃烧器rn
return flow zone｜回流区rn
return flue boiler｜回焰锅炉rn
return tube boiler｜回火管锅炉rn
return tubular boiler｜回火管锅炉rn
return water temperature｜回水温度rn
reverberate｜反射；混响rn
reverberatory｜反射炉，返焰炉；回响的；反射的rn
reverse blower｜（翼片）反弯鼓风机rn
reverse Carnot cycle｜逆卡诺循环rn
reverse osmosis membrane｜反渗透膜rn
reversed return system｜同程式系统rn
reversibility｜可逆性rn
reversible｜可逆的，可返转的rn
reversible cycle｜可逆循环rn
reversible process｜可逆过程rn
reversible reaction｜可逆反应rn
Reynold's number｜雷诺数rn
rib｜肋，筋，加强部；以肋加固rn
ribbed｜带肋的，带筋的，起棱的rn
ribbed fir bar｜带肋炉条rn
ribbed heating pipe｜肋形暖气管rn
ribbed pipe｜肋片管rn
ribbed radiator｜肋片对流散热器rn
ribbed tube｜肋管rn
ribbon｜带，条；卷尺；板条rn
ribbon burner｜带型（煤气）燃烧器rn
ribbon ice｜带状冰rn
RIDGID｜美国里奇工具rn
rim exhaust｜槽边排风罩rn
rim ventilation｜槽边通风rn
ring burner｜环式煤气燃烧器rn
ring distribution system｜环形配水系统rn
ring lubrication｜油环润滑法rn
riser｜立管rn
roadblock｜路障；困难，阻碍rn
Robinson's anemometer｜转环风速仪，罗宾逊风速仪rn
robust｜坚固的，硬的rn
rock bed regenerative cooling｜岩石床再生冷却＇是一种空气调节系统中的一部分，以填充的砂砾层为蒸发冷却和热回收之用＇rn
rolled tube｜胀过的管子rn
roller balls｜滚珠rn
roller bearing｜滚柱轴承rn
roller type clearable air filter｜可清洗卷帘式（空气）过滤器rn
roof ventilator｜筒形风帽rn
room absorption｜房间吸声量rn
room air conditioner｜房间空气调节器rn
Root's blower｜罗茨鼓风机rn
Root's type rotary blower｜罗茨鼓风机rn
rotameter｜转子流量计rn
rotary blower｜旋转式鼓风机rn
rotary burner｜旋转式燃烧器rn
rotary cup burner｜转杯式燃烧器rn
rotary dehumidifier｜转轮除湿机rn
rotary distributor｜旋转布水器rn
rotary heat exchanger｜转轮式换热器rn
rotary oil burner｜回转式燃油器rn
rotary piston blower｜旋转活塞式鼓风机rn
rotary sensible and latent heat exchanger｜旋转式显潜热交换器rn
rotary supply outlet｜旋转送风口rn
rotating air outlet with movable guide vanes｜旋转送风口rn
rotating turn table｜转盘给煤机rn
roughness factor｜相对粗糙度rn
round steel butterfly valve with chain｜拉链式圆形钢制蝶阀rn
round tube mercury thermometer with iron casing｜圆管铁壳水银温度计rn
row of tubes｜管排rn
rub｜摩擦，擦，涂抹；阻碍rn
rubber｜橡胶，橡皮rn
rubber belt｜橡胶带rn
rubber buffer｜橡胶缓冲垫rn
rubber collar｜橡胶环rn
rubber cushion｜胶皮垫rn
rubber diaphragm｜橡胶膜rn
rubber gasket｜橡皮垫圈rn
rubber hose｜橡胶软管rn
rubber lining｜橡胶衬垫rn
rubber mount｜防振橡皮rn
rubber packing｜橡胶填料rn
rubber plug｜橡皮塞rn
rubber ring｜摩擦环＇轴封的一个转动或固定的组件＇rn
rubber shock absorber｜橡胶隔振器rn
rubber washer｜橡皮垫圈rn
rubber…lined｜衬胶的rn
rubber…sealed｜有橡胶衬垫的，橡胶垫密封的rn
rule of thumb｜经验方法，近似估计法，近似计算法rn
run back ward｜反＇倒＇转rn
runnability｜流动性rn
running balance｜动平衡rn
running board｜踏板rn
running means｜滑动平均rn
rupture member｜破裂构件＇在预定的最大负荷时破裂的一种安全装置＇rn
RUUD｜美国路德空调rn
RYODEN｜菱电冷却塔rn
Sabin｜塞宾＇表面吸声单位＇rn
saddle boiler｜马鞍形锅炉rn
saddle hub｜凹形管座rn
safety breaker｜安全开关，安全断路rn
safety valve｜安全阀rn
salt brine｜盐水rn
sampling hole｜测孔rn
sampling port｜测孔rn
Samsung｜三星rn
sand bed｜砂层rn
sand blast｜喷砂，喷砂处理rn
sanitary and valve｜卫生洁具rn
SanKen｜三垦变频器rn
SANYO｜三洋rn
SASWELL｜英国森威尔rn
saturated steam｜饱和蒸汽rn
saturated vapor｜饱和蒸汽rn
saturation humidity ratio｜饱和含湿量rn
saturation steam table｜饱和蒸汽表rn
sauna bath｜芬兰式蒸汽浴，桑拿浴rn
SB｜sootblower 吹灰装置；stuffing box 填料函，填料箱；switch board 配电