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1AA[ampere]安培aberrantsource异常误差来源ablution清洗，吹除abnormalcondition异常工况abnormalevent异常事件abnormaloccurrence异常事件abnormaloperation异常运行abnormality异常abort异常中止above-critical超临界的above-ground地面（上的）above-water水（上的）abradant（研）磨料abrasion磨损[蚀]abrasionresistancetest耐磨试验abrasion-proof耐磨（的）abrasivecutting砂轮切割abreuography荧光X射线照相术abruption断裂abscess（金属中）气孔，砂眼absolutealarm绝对值报警absoluteerror绝对误差absolutefilter绝对过滤器absorbance吸收率absorbeddose吸收剂量absorbeddoserate吸收剂量率absorbedfraction吸收部分/份额absorber吸收体[剂]absorberelement吸收元件absorberrod吸收棒absorptance吸收率[系数]absorption吸收absorptioncoefficient吸收系数absorptioncolumn吸收柱absorptioncrosssection吸收截面absorptiontype吸收类型abstraction萃取abundance丰度ac[alternativecurrent]交流[电]accelerationpressuredrop加速压降accelerationspring加速弹簧acceptabledailyintake[ADI]日容许摄入量acceptablelimit可接受限值acceptance验收acceptancecriteria验收准则，验收标准acceptanceinspection验收检查acceptedasnoted按说明接受access通道，入口accessanduse利用accesscontrol[A/C]出入口控制accesshatch[lock]出入闸门accessport人孔，舱出入口accesstube通道管accessway通路accessibility可达性accessible可进入（的）accession接收accessory附[零]件，辅助（的）accident事故accidentanalysis事故分析accidentcondition事故工况accidentconsequence事故后果accidentdose事故剂量accidentmanagement事故管理accidentmitigation事故缓解accidentprecursor事故先兆accidentprevention事故预防accidentprogression事故进展accidentsequence事故序列accidentshutdown事故停堆accidentsourceterm事故源项accidentwithoff-siterisk有厂外风险的事故accidentwithoutsignificantoff-siterisk无严重厂外风险的事故accidentaldepressurizationofthecovergas覆盖气体事故降压accidentalerror随机误差accidentalexposure事故照射accidentalfailure随机故障accountability衡算accumulateddose累积剂量2accumulator(tank)安全注射箱，蓄压箱accuracy精度accuracyofmeasurement测量精度acetylene乙炔acidpickling酸洗acidic酸性acidity酸度acid-prooftile耐酸瓷砖acousticinsulation隔音层acousticmaterial隔音材料ACPT[automaticcontinuousphosphatetreatment]自动连续磷酸盐处理acquisition征集acronym（首字母）缩写词acrylicplasticwindow丙烯酸塑料窗actionlevel[应急]行动水平，应急响应水平activatedcarbon活性炭activatedcharcoalfilter活性炭过滤器activation活化activationofcorrosionproduct腐蚀产物的活化activationproduct活化产物activealumina活性氧化铝activecarbonbedding活性炭床activecarbonfilter活性炭过滤器activecomponent能动部件activeeffluent放射性流出物[排出流]activeloss有功损耗activenetwork有源网络activenucleationsite活性成核位置activewaste放射性废物activezone活性区，放射性区activity(放射性)活度activityconcentration放射性浓度activitylevel活度水平activitymedianaerodynamicdiameter活度中值空气动力学直径activitymedianthermodynamicdiameter活度中值热力学直径actualline实线actualvalue实际值actuatedequipment驱动设备，传动设备actuatingmechanism驱动[执行]机构actuation驱动，启动actuationdevice[触发]驱动装置，执行机构actuator执行[操作]机构，驱动[传动]装置acuteexposure急性照射acuteintake急性吸入[取]acuteradiationinjury急性辐射损伤adhoc专门，特设，特定（的）adapter管接头，异径接头，适配器adaptivecontrol自适应控制ADC[analog-digitalconverter]模-数转换器add/dropmultiplexer[ADM]分插复用器addedmetal填充金属addendum补遗adder加法器additionalitems补充（添加）项additionalrecords补充记录additive添加物[剂]additiveriskprojectionmodel相加风险预测模式adequatedistribution均匀分布adherency/adherence粘着〔附〕，附着（力）adhesiontest粘附试验adiabatic绝热（的）adiabaticcompression绝热压缩adion吸附离子adjacency相邻，邻接adjointflux共轭中子通量adjustablewrench/spanner活动扳手adjusterabsorberrod调节吸收棒adjusterdrivemechanism调节棒驱动机构adjusterextension调节棒延伸段adjusterrod调节棒adjusterunit调节（棒）装置adjustingpin定位销adjustingvalve调节阀adjustment调整adlayer吸附层administrativearchives文书档案administrativehistory组织沿革admiraltybrass海军用黄铜admissionintake[port]进气[汽]口3admittance导纳；允许进入adoptionbyequation等同采用adoptionbyequivalent等效采用adsorbent吸附剂adsorption吸附adsorptioncarrier吸附载体adsorptionfilter吸附过滤器adulterant掺杂物advancepayment预付款advancedcontrolroom先进控制室advantagefactor有利因子advection平流，平移advectivecooling平流冷却adverseconditions不良状况adverseenvironment有害环境adviseallconcerned通知有关各方advisorygroup顾问团AECB[AtomicEnergyControlBoard]（加拿大）原子能管理局AECL[AtomicEnergyofCanadaLimited]加拿大原子能有限公司aerialcable架空电缆aerify充[掺]气，气化aerobic需[有]氧的aerobiont好氧微生物aerodymanic空气动力（的）aerodymanicdispersion空气动力学弥[分]散aeroradioactivity大气放射性aerosol气溶胶affinity亲合力after-heat余热afterheatcooling余热冷却after-power剩余功率ageapproximation年龄近似agehardening时效硬化ageing老化，时效ageingdegradation老化降级[质，解]ageingmanagement老化管理ageingtesting老化试验agglomerant凝聚剂aggressive腐蚀性（的）agitation搅拌agitator搅拌器AI,A/I[analoginput]模拟量输入AIM[assetandinformationmanagement]文档和信息管理air(circuit)breaker空气断路器airadmissionfilter进气[入口]过滤器airbalancehoist空气平衡吊车airblastcircuitbreaker[ABCB]空气[气吹式]断路器airbottle气瓶，气罐aircirculating空气循环aircompressor空气压缩机airconditioningsystem空调系统aircoolerwaterpiping空气冷却器水管airdeflector空气折流板airdryer空气干燥器airentrainingagent加气剂airequivalent空气等效（的）airexhaust排风，抽风airextractionflowdiagram抽气流程图airextractionsystem抽气系统airfiltrationunit[AFU]空气过滤装置airhoist气动[平衡]吊车airinjector空气喷射器airinleakage空气漏入airinletvalve进气阀airintake进气[风]口airkerma空气比释动能airleakagetesting空气泄漏试验airlock空气[密封]闸门airlockvalve空气闸阀airpollution大气污染airpoweredbrake气动制动器airpressureregulatingvalve空气压力调节阀air-proof气密的airreceiver空气储罐airstream气流airsuppliedsuit气衣airsupply供气，气源，送风airtank气罐airventvalve排气阀4air/oilpackage气动/油压动力包air-blockvalve气阻阀airborneparticulatesampler[APS]气载粒子取样器airborneradioactivity气载放射性airlockdoor气密门airlocklocksystem闸门锁紧系统airlocked密封的，密闭的airlock空气闸门air-oiltank油气箱air-operatedvalve气动阀airtightfittings气密连接件airtightjointdoor密封门airtightring气密环ALARA[aslowasreasonablyachievable]合理可行尽量低alarmacknowledge报警确