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one…pipe loop circuit heating system｜水平单管采暖系统rn
one…pipe seriesloop heating system｜单管顺序式采暖系统rn
one…third octave band｜倍频程rn
one…way stop return valve｜单向止回阀rn
on…of control｜双位调rn
opaque body｜不透明体rn
open air boiler｜露天＇室外＇锅炉rn
open brine system｜开式盐水系统rn
open loop control｜开环控制rn
open return｜开式回水rn
open shell and tube condenser｜立式壳管冷凝器＇利用重力使水沿管子流下的立式多管的壳管冷凝器＇rn
open tank｜开式水箱rn
open tube manometer｜开口气压表rn
open tube spacing｜疏管距布置rn
operating board｜工作台rn
operating disturbance｜运转＇操作＇故障rn
operating handbook｜操作手册rn
operating pressure｜工作压力rn
operating range｜作用半径rn
operating table｜操作台，手术台rn
operation energy consumption｜运行能耗rn
opposed multiblade damper｜对开式多叶阀rn
opposite blade damper｜对开叶片风阀rn
orbit｜轨道rn
ordinal numbers｜序数rn
ordinance bench mark｜规定水准标点rn
organic corrosion inhibitor｜有机防腐剂rn
organic inhibitor｜有机抑制剂rn
organic substance｜有机物rn
organized air supply｜有组织进风rn
organized exhaust｜有组织排风rn
organized natural ventilation｜有组织自然通风rn
orientation of building｜建筑方位rn
orifice meter in tube｜管孔流量计rn
oscillating bar｜振动炉排片rn
out put variable｜输出量rn
out…boiler treatment｜锅炉外处理rn
outbreak｜爆发＇燃＇；冲破；脉冲rn
outburst｜爆发，发火；突然放气rn
outdoor air design conditions｜室外空气计算参数rn
outdoor boiler｜露天锅炉rn
outdoor critical air temperature for heating｜采暖室外临界温度rn
outdoor design dry…bulb temperature for summer air conditioning｜夏季空气调节室外计算干球温度rn
outdoor design hourly temperature for summer air conditioning｜夏季空气调节室外计算逐时温度rn
outdoor design mean daily temperature for summer air conditioning｜夏季空气调节室外计算日平均温度rn
outdoor design relative humidity for summer ventilation｜夏季通风室外计算相对湿度rn
outdoor design relative humidity for winter air conditioning｜冬季空气调节室外计算相对湿度rn
outdoor design temperature for calculated envelope in winter｜冬季围护结构室外计算温度rn
outdoor design temperature for heating｜采暖室外计算温度rn
outdoor design temperature for summer ventilation｜夏季通风室外计算温度rn
outdoor design temperature for winter air conditioning｜冬季空气调节室外计算温度rn
outdoor design temperature for winter ventilation｜冬季通风室外计算温度rn
outdoor design wet…bulb temperature for summer air conditioning｜夏季空气调节室外计算湿球温度rn
outdoor humidity｜室外湿度rn
outdoor mean air temperature during heating period｜采暖期室外平均温度rn
outdoor temperature｜室外温度rn
outdoor unit｜室外机rn
outlet air velocity｜出口风速rn
outlet box｜出＇配＇线盒rn
outlet sound absorber｜送风口消声器rn
out…of …balance｜失去平衡rn
output variable｜输出变量＇控制系统中每一个元件的一个物理量，它的变化最终由该元件的功能所控制＇rn
Oventrop｜德国欧文托普阀门rn
over submergence｜淹没，覆盖rn
overall absorption｜总吸收量rn
overall adiabatic efficiency｜总绝热效率rn
overall breadth｜总宽度rn
overall efficiency of separation｜除尘效率rn
overall heat transmission coefficient｜传热系数rn
overflow chamber｜溢流室rn
overflow pipe｜溢流管rn
overflow tube｜溢流管rn
overhead brine spray deck｜盐水喷淋架空平台＇盐水喷淋冷却器的平台＇rn
overhead distribution｜上分式；上分配管rn
overhead fire tube boiler｜上火管锅炉rn
overheat blowing｜过热送风rn
overheat steam｜过热蒸汽rn
overlapping averages｜滑动平均rn
overshoot｜超调量rn
oxidability｜可氧化性rn
oxidable｜有氧化性rn
oxide catalytic bustion equipment｜氧化催化燃烧装置rn
oxyacetylene blowpipe｜氧乙炔吹管rn
oxygen balance｜氧平衡rn
oxygen equilibrium｜氧平衡rn
oxyhydrogen blowpipe｜氢氧吹管rn
p。f。…fired boiler｜煤粉锅炉rn
packaged air conditioner｜整体式空气调节器rn
packaged boiler｜快装锅炉rn
packaged economic type boiler｜快装式经注型锅炉rn
packaged heat pump｜热泵式空气调节器rn
packaged heating boiler｜快装式供暖锅炉rn
packed bed｜填充层rn
packed column｜填料塔rn
packed tower｜填料塔rn
packing box｜填料盒rn
packing chamber｜填料盒rn
paddle blade｜平叶片rn
paddle…bladed impeller｜径向平叶轮rn
paint base｜底漆rn
paint brush｜漆刷rn
pan breeze｜炉＇煤＇渣rn
Panasonic｜松下rn
panel board｜配电盘，控制屏rn
panel heating｜辐射采暖rn
paperboard｜纸板rn
parabola｜抛物线rn
parabolic flow character｜抛物线流量特性rn
parameter detection｜参数检测rn
part｜（通风〕部件rn
partial enclosure｜局部密闭罩rn
partial pressure of water vapor｜水蒸汽分压力rn
particle｜粒子rn
particle counter｜粒子计数器rn
particle number concentration｜计数浓度rn
particle size｜粒径rn
particle size distribution｜颗粒度分布rn
particle sizing and counting method｜计径计数法rn
particulate｜粒子rn
particulate collector｜除尘器rn
particulates｜大气尘rn
parts per billion｜十亿分率rn
pascal｜帕斯卡rn
pass box｜传递箱rn
passable｜可通行的rn
passable trench｜通行管沟rn
passage｜通道rn
passage ventilating duct｜通过式风管rn
pass…by｜旁路rn
passover bend｜绕过式弯管rn
pasteboard｜厚纸板，胶纸板rn
patchboard｜接线板rn
PB｜push button 按钮rn
PCB｜印刷线路板rn
peak load heating boiler｜高峰负荷供暖锅炉rn
peat brick｜泥煤砖rn
peat bustion chamber｜泥煤燃烧室rn
Peclet number｜佩克勒数＇雷诺数和普朗特尔数之积＇rn
penetrability｜渗透＇贯穿＇性；透明度rn
penetration rate｜穿透率rn
percentage by weight｜重量百分数rn
percentage of men，women and children｜群集系数rn
percentage of possible sunshine｜日照率rn
percentage of return air｜回风百分比rn
perfect bustion｜完全燃烧rn
perfect transmission body｜完全透过＇射＇体rn
perforated brick｜多孔砖rn
perforated ceiling air supply｜孔板送风rn
perforated plate tower｜筛板塔rn
period of back wash｜反冲洗时间，反冲洗周期rn
period of blowing｜鼓风时间，吹风期，排泄周期rn
periodic blow of pipe｜定期排污管rn
periodic bustion process｜周期性燃烧过程rn
periodic dust dislodging｜定期除灰rn
permeability｜渗透性，穿透性rn
permeability coefficient｜渗透系数rn
permeability of gas｜毒气渗透性rn
permeability of heat｜导热性rn
permeability rating of air｜透气额定值，透气率rn
permeable｜可渗透的rn
permeable plastic｜可渗透塑料rn
permeable soil｜渗透性土rn
permissible｜容许的，可允许的rn
permissible carbon dioxide content｜二氧化碳容许含量rn
permissible deviation｜容许偏差rn
permissible dose｜（放射性）允许剂量rn
permissible drop｜容许降度rn
permissible error｜容许误差rn
permissible limit｜容许限度rn
permissible load｜容许负荷rn
permissible pressure difference｜容许压差rn
permissible speed｜容许速度rn
permissible temperature｜容许温度rn
permissible value｜容许值rn
permutable｜可变更的，可代换的rn
Persian blinds｜百叶窗rn
perturbation｜干扰，扰动；破坏rn
phase boundaries｜相界rn
phototube｜光电管，光电元件rn
phototube dew…point meter｜光电管露点计rn
phototube dust counter｜光电粉尘计数器rn
physical impossibility｜违反自然法则的不可能事rn
PI control｜比例积分调节rn
pickling bath｜酸洗池rn
picture tube｜显象管rn
PID control｜比例积分微分调节rn
piece｜（通风〕部件rn
pier bath｜单间浴室rn
pier between two windows｜窗间墙rn