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proportional plus automatic reset action｜比例自动复位作用rn
proportional plus integral action｜比例加积分动作rn
proportional plus integral plus differential action｜比例积分微分动作rn
proportional position action｜比例位置动作rn
proportional regulator｜比例调节器rn
proportional temperature controller｜比例温度控制器rn
proportional…integral control｜比例积分调节rn
proportional…integral derivative control｜比例积分微分调节rn
proportionality｜比例性rn
proportionality range｜比例范围rn
proportioning by volume｜容积分配rn
proportioning by weight｜重量分配rn
protected roof monitor｜避风天窗rn
protecting tube｜保护套管rn
protuberance｜隆起，突出rn
pry bar｜撬棒rn
psychrometric chart｜声级计rn
psychrometric table｜温湿度表rn
public｜公共的，公用的rn
public aqueduct｜公共给水管道rn
public building｜公共房屋rn
public fire alarm｜公用火灾报警器rn
public health｜公共卫生rn
public health engineering｜卫生工程学rn
public nuisance｜公害rn
public sewer｜公共下水道rn
public space｜公共场所rn
public tap｜公用龙头rn
public use｜公用rn
public utility｜公用事业rn
public utility charges｜公用事业费rn
public water tap｜公共水龙头rn
public welfare｜公共福利rn
public works｜公用工程，市政工程rn
pull box｜分线盒rn
pulsation action｜尘化作用rn
pulverized fuel…fired boiler｜煤粉锅炉rn
pump caliber｜水泵口径rn
pump lubrication｜强制润滑rn
pumpable｜可用泵抽送的rn
pure water boiler｜纯水锅炉rn
push button｜按钮rn
push…button｜按钮，按钮开关rn
push…button control｜按钮控制rn
push…button socket｜按钮座rn
push…button switch｜按钮开关rn
push…button valve｜按钮阀rn
push…pull hood｜吹吸式排风罩rn
quantity of bustion｜燃烧值，燃烧时放出的热量rn
quantum number｜量子数rn
quarter bend｜直角弯头rn
quick open flow characteristic｜快开流量特性rn
quick…burning｜速燃的rn
rabbet｜孔，槽，座；插孔，切口，凹处；嵌接rn
rabbet joint｜企口接合rn
rabble｜拨火棒，搅拌棒；搅拌rn
rabbler｜拨火棒；加煤工，司炉rn
rad｜radiation absorption dose 拉特＇辐射吸收剂量单位，1rad（拉特）=100erg/g（尔格/克）rn
radial basin｜辐射形流域rn
radial blade fan｜径向叶片通风机rn
radial…bladed impeller｜径向平叶轮rn
radiant absorption｜辐射吸收rn
radiant boiler｜辐射式锅炉rn
radiant burner｜无焰燃烧器rn
radiant heating｜辐射采暖rn
radiant intensity｜辐射强度rn
radiant roof tubes｜辐射罩的管子rn
radiant tube｜辐射管rn
radiant tubular heater｜辐射型管式炉rn
radiant wall tubes｜辐射壁管rn
radiation absorption dose｜拉特＇辐射吸收剂量单位，1rad（拉特）=100erg/g（尔格/克）rn
radiation belts｜辐射带rn
radiation boiler｜辐射型锅炉rn
radiation intensity｜辐射强度rn
radiator｜散热器rn
radiator blind nipple｜散热器内螺纹接口rn
radiator box｜散热器罩rn
radiator bracket｜散热器支架rn
radiator branch｜散热器支管rn
radiator heating｜散热器采暖rn
radiator heating system｜散热器采暖系统rn
radiator valve｜散热器调节阀rn
radioactive substance｜放射性物质rn
radius at bent｜曲率＇弯曲＇半径rn
rain water catch basin｜雨水边井rn
rain…water system｜雨水系统rn
ram pump｜柱塞泵rn
ramification｜分支rn
RANCO｜宏高自控rn
random｜随机的，偶然的，不规则的rn
random arrangement｜无规则排列rn
random check｜抽查rn
random inspection｜抽查rn
random noise｜无规噪声rn
random order｜任意次序rn
random packing｜松散填料rn
random process｜随机过程rn
random sampling｜任意取样rn
range｜行，列；极限，范围，界限；距离，量＇射＇程rn
range ability｜（被调量的）幅度变化范围rn
range coal｜块煤rn
range control switch｜量程转换开关rn
range coverage｜作用距离＇范围＇rn
range of application｜应用范围rn
range of hearing｜可听范围rn
range of indication｜指示范围rn
range of load｜负荷范围＇极限＇rn
range of measurement｜测量范围rn
range of regulation｜调节范围＇幅度＇rn
range of stability｜稳定范围＇阶段＇rn
range of temperature｜温度变化范围rn
range…changing switch｜量程转换开关rn
rangefinder｜测远器rn
ranging｜测距，距离调整rn
ranging puter｜测距计算机rn
ranging rod｜测量杆rn
Rangmuir equation｜郎缪尔公式＇吸附剂质量与被吸附物质量之间的理论关系公式＇rn
rank｜等，级；排，列；分类，分等级rn
Rankine cycle｜兰金循环rn
Rankine temperature scale｜兰氏温标＇一种绝对温标，以水的三相温度定为491。68°R，并在标准大气压下将冰的溶点和水的沸点之间分成180
度（1°R=1°F）rn
Rankine thermal efficiency｜兰金循环热效率rn
Rankine's constant pressure gas viseter｜兰金常压气体粘度计rn
ranking｜分类＇级＇；排＇序＇列rn
Ranque…Hilsch effect｜兰克…赫尔胥效应＇气体以切线方向进入管子形成涡流而产生的冷却效应＇rn
rapid｜快的，急速成的，高速的rn
rapid air change｜快速换气rn
rapid condensation｜快速冷凝rn
rapid cooling｜快速冷却rn
rapid current｜急流rn
rapid dryer｜快速干燥器rn
rapid fastener｜快速紧固装置rn
rapid filtration｜快滤rn
rapid hardener｜快速硬化器rn
rapid hardening cement｜快硬水泥rn
rapper｜振动器，（取样用的）轻敲锤rn
rare｜稀少的，稀有的，稀薄的rn
rare air｜稀薄空气rn
rare gas｜稀有气体rn
rare metal｜稀有金属rn
rarefaction｜稀薄＇化＇rn
rarefy｜稀释；使稀薄，抽空rn
rare…metal couple｜贵金属热电偶，稀有金属热电偶rn
rate｜率，变化率；速度；等级，程度；比率，比值；流＇耗＇量；价值＇格＇，评价，计＇估＇算rn
rate of attack｜浸蚀速度rn
rate of boiling｜沸腾强度rn
rate of change｜变化率，变化速度rn
rate of bustion｜燃烧率rn
rate of bustion per unit grate area｜炉排单位面积燃烧率rn
rate of condensation｜凝结速度rn
rate of consumption｜消耗率rn
rate of cooling｜冷却速度rn
rate of effusion｜流出速度rn
rate of evaporation｜蒸发率，蒸发量，蒸气负荷rn
rate of evaporation per unit heating surface｜（锅炉机组）受热蒸发率，受热面单位蒸汽负荷rn
rate of excess air｜（燃烧）过剩空气率rn
rate of expansion｜膨胀率rn
rate of filtration｜过滤速率rn
rate of firing｜燃烧速率，燃料耗量rn
rate of flow｜流量，流速rn
rate of flow of air｜空气流量rn
rate of heat exchange｜换热率rn
rate of heat flow｜热流量，热流rn
rate of heat liberation per unit furnace volume｜单位炉膛容积放热率，炉堂容积热强度rn
rate of heat release｜释热率，炉膛容积热强度rn
rate of heat transfer｜传热量；热流rn
rate of inflow｜进水流量rn
rate of instant oil discharge｜瞬时排油率rn
rate of leakage｜漏水率rn
rate of loading｜负荷率；带负荷性能rn
rate of mass transfer｜质量转移速度rn
rate of moisture absorption｜吸湿率rn
rate of molecular diffusion｜分子扩散率rn
rate of propagation｜传播速度rn
rate of radiation｜辐射强度rn
rate of return｜（投资）回收期限rn
rate of revolution｜转速rn
rate of strain｜应变速度，应变率rn
rate of turn｜转速rn
rate of vaporization｜蒸发速度rn
rated｜额定的，规定的，标称的rn
rated capacity｜额定容量＇能力＇rn
rated conditions｜额定工况＇条件＇rn
rated consumption｜额定耗量rn
rated current｜额定电流rn
rated energy｜额定功率，额定能量rn
rated flow｜额定流量rn
rated horsepower｜额定功率＇马力＇rn
rated load｜额定负荷rn
rated load operation｜额定负荷运行rn
rated of air circulation｜换气次数，空气循环率＇单位时间内房间的循环空气体积除以该空间的体积＇rn
rated of decay｜衰减率rn
rated of discharge｜排出量，流量rn
rated of discharge of ground water｜地下水流量rn
rated of drying｜干燥速度rn
rated of dust collection｜集尘率rn
rated of dust precipitation｜集尘率rn
rated outp