机械设备专业英语缩写词.doc

12 总则11 英文缩写词用在以英文注释的图纸和技术文件中。用中文注释的图纸和技术文件，除特殊规定外，一般不采用。12 英文缩写词用大写和小写两种字母书写。在绘制工程设计图纸时，一律采用大写字母。在编制设计标准（规定）和技术文件时，除非另有规定，应尽量使用在本英文缩写词中给出的形式。3 缩写词缩写英文中文ABAnchor Bolt地脚螺栓Abs Absolute绝对的AbsAbstract文摘、摘要A/CAccount帐、帐目ACAlternating Current交流电AddAddendum补充、补遗、附录ADLAcceptable Defect Level允许的缺陷标准AdptAdapter连接器、接头AEAbsolute Error绝对误差AETAcoustic Emission Examination声发射检验AISCAmerican Institute of Steel Construction美国钢结构学会.AISIAmerican Iron and Steel Institute美国钢铁学会ALAluminium铝AlkAlkaline碱的、强碱的ALMAlarm报警AltAlternate交流、改变AmbAmbient周围的AmtAmount数量、金额AnhAnhydrous无水的ANSIAmerican National Standard Institute美国国家标准学会APIAmerican Petroleum Institute美国石油学会AppApparatus设备AppAppendix附录、补遗ApplApplied应用的ApplApplicable适当的、合适的ApproxApproximate大约、近似AppxAppendix附录、附件ArrgtArrangement布置ASAlloy steel合金钢AsbAsbestos石棉ASLAbove Sea Level海拔高度ASMAmerican Society for Metals美国金属学会ASMEAmerican Society of Mechanical Engineers美国机械工程师学会AssemAssembly装配ASTMAmerican Society for Testing and Materials美国材料试验学会AtmAtmosphere大气atmAtmosphere pressure大气压AutoAutomatic自动AuxAuxiliary辅助设备、辅助的AvailAvailable有效的、可用的AvgAverage平均AWArc welding电弧焊AWAutomatic Welding自动焊A.W.G.American Wire Gauge美国线规AWS(AWI)American Welding Society(Institute)美国焊接学会BABBabbitt Metal巴氏合金BafBaffle折流板、缓冲板BBBall Bearing滚珠轴承BCBetween Centers中心距、轴间距BCBolt circle螺栓中心圆BDBlow down放空、放料BEDDBasic engineering design data基础工程设计数据BetBetween在之间BevBevel斜角、坡口BFBack face背面、反面BFBlind flange法兰盖（盲法兰）BHNBrinell hardness number布氏硬度值BLBattery Limit界区BLBattery Line界区线B/LBill of Loading载荷数据表BldBlind盲板BlkBlack黑色BlkBlank空白BMBench Mark基准标志BMBending Moment弯矩B/M (BOM)Bill of Material材料表BotBottom底BPBack Pressure背压BPBase plate底板BRBasic Requirements基本要求BRGBearing轴承BRKTBracket支架BrsBrass黄铜BSBoth Side两边BSBritish Standard英国标准BSBalance Sheet平衡表BsktBasket筐BTUBritish Thermal Unit英国热量单位BVBack View 后视图BVButterfly Valve碟阀BWBrine Vater冷冻盐水BWButt Welding对焊BWGBirmingham Wire Gauge 伯明翰线规BWRA.British Welding Research Association英国焊接研究协会CCentigrade(degree)摄氏度数CAChemical Analysis化学分析CACorrosion Allowance 腐蚀裕量CalcCalculate计算CapCapacity能力、容量CASCast Alloy Steel铸造合金钢CatCatalyst触媒、催化剂CatgCatalog目录、样本C-C(C/C)Center to center中心距cccarbon copy 复写（纸复制）本cccubic centimeter立方厘米CCWCounter clockwise反时针方向CDCold Drawn冷拉的、冷拔的CECovered Electrode焊条CentCentrifugal离心的CFCentrifugal Force离心力CFWContinuous Fillet Weld连续角焊缝CGCenter of Gravity重心CHCase-Hardening表面硬化ChChapter章节ChamChamfer倒角、斜角、斜面ChanChannel通道、沟槽、管箱、槽钢ChkCheck检查CICast Iron铸铁CIFCost， Insurance and Freight到岸价格CircCircumference圆周、环向CLClass等级、类别CLCenter Line中心线CLClearance间隙CLASCast Low Alloy Steel低合金铸钢CMCenter of Mass质量中心CndsCondensate冷凝液COClean Out清除CoCompany公司CoefCoefficient系数ColColumn柱、塔CombCombination组合CompCompare比较CompCompound化合物、复合的CompnComposition组分ConcConcrete混凝土ConcConcentration浓度CondConductor导体CondCondition条件ConnConnection联接、接口ConstConstant常数、恒定的Const Construction结构ContControl控制ContContain包含Cont Content内容、含量CorpCorporation公司CorrCorrosion腐蚀CPCentipoise厘泊CPCenter of Pressure压力中心CplCoupling管箍CplgCoupling联轴节CRChloroprene Rubber氯丁橡胶CSCarbon Steel碳钢CSCenter Section中心截面CSTGCasting铸造、铸件CtrCenter中心CWCooling Water冷却水CWContinuous Welding连续焊CyCycle循环CylCylinder气缸、圆筒DDensity密度DblDouble二倍、双DEDDDetail Engineering Design Data详细工程设计数据DefDefinition定义DegDegree度、等级DeptDepartment部门DesDesign设计DetDetail详细DetnDetermination确定、决定DevDeviation偏差DevDevice装置DFDesign Formula设计公式DfDeflection偏斜DiaDiameter直径DiagDiagram图DimDimension尺寸DirDirection方向DischDischarge排出、出口DistrDistribution分布DivDivision部分、区分DLDead load静载荷、自重DocDocument文件、资料DPDesign Pressure 设计压力DPDifferential Pressure压差、分压DrDrill钻孔DrDrive驱动DWDead weight静重、自重DWDemineralized Water脱盐水DwgDrawing图EEast东ECElasticity Coefficient弹性系数EccEccentric偏心EFElectric Furnace电炉EffEfficiency效率egexempli gratia例如EHPEffective Horsepower有效功率EJExpansion joint膨胀节ELElevation标高ElbElbow弯头ElecElectric电的ElemElement元素、元件EllipEllipsoidal椭球的、椭圆的Emer、EmergEmergency事故、紧急EnclEnclosure密封、封闭Engrg、EngEngineering工程、设计EPExplosion Proof防爆EqEquipment 设备EqEquation公式、方程式EqEquivalent当量ESElectrostatic静电ESTEstimate估计ESWElectro-Slag Welding电渣焊ETEddy Current Examination涡流检验etcet cetera (and so on)等等EvapEvaporate蒸发ExExample例如ExExcess过剩、超过Exam Examination检验ExhExhaust废气、排气ExpExpansion 膨胀ExptlExperimental实验的ExtExternal外部ExtExtreme极端的FAOFinish All Over全部加工FAXFacsimile传真FBFlat Bar扁钢FCAWFlux Cored Arc Welding熔剂芯弧焊（手工焊）FdnFoundation基础FDWFeed Water给水FFFlat Face平面F/FField Fabricated现场制造FigFigure图FinFinish加工、完成FLFull Load满载FlexFlexible挠性FlgFlange法兰FOBFree On Board离岸价格FOCFree Of Charge免费ForgForging锻件FOSFactor Of Safety安全系数FREQFrequency频率FSTForged Steel锻钢FtFeet英尺FtgFitting管件、装配F.V.Full Vacuum全真空FWFresh Water 新鲜水FWField Weld现场焊接FWFillet Weld角焊缝GAGalGeneral AverageGallon平均值加仑GenGeneral一般、总的GenrGenerator发电机、发生器GFGroove Face槽面GlGlass玻璃GLGround Level地面标高GMAWGas Metal Arc Welding气体保护金属极电弧焊GndGround接地、地面GovtGovernment政府GPGeneral Purpose一般用途、通用GrGrade等级GrGravity重力GrdGround地面GrpGroup分组、类Gr- wtGross weight 总重、毛重HBBrinell Hardness布氏硬度 HCHydrocarbon烃类 HCHigh Capacity大容量 HDHead压头 HexHexagon六角 HHHand Hole手孔 HorHorizontal水平、卧式 hpHorsepower马力 HPHigh Pressure高压 HRRockwell Hardness洛氏硬度HR(hr)Hour小时 HRCRockwell C HardnessC级洛氏硬度HSHigh Pressure Steam高压蒸汽 HSShore Scleroscope Hardness肖氏硬度HSCHigh Pressure Condensate高压蒸汽凝液 HTHigh Temperature高温 HTHeat Treatment热处理 HTHydrostatic Test水压试验 HVVickers Hardness维氏硬度 HvyHeavy重的、重型的 HWHot Water热水 ICWInter Cooling Water中间冷却水 IDInside Diameter内径 IFInterface交接面 IllusIllustration说明 、图解 INInlet进口 inInch英寸 inclIncluding包括 IndIndicate指示 InsInsulation保温 INSPInspection检验 InstlInstallation安装 IntInternal内部的 IntIntermediate中间的 IntmtIntermittent间歇的、间断的 I/OInput/Output输入/输出 JtJoint连接、接头 KGKilogram公斤 KW(kw)Kilowatt千瓦 LASLow Alloy Steel低合金钢lbpound磅 LCLevel Control液位控制器 LengLength长度 LFFemale Face凹面 LgLong长的 LGLevel Glass液位计 LHLeft Hand左手 LinLinear线性的 LiqLiquid液体 LjLap joint搭接 LJLapped Joint松套 LMMale Face凸面 LMTDLogarithmic Mean Temperature Difference对数平均温差 LNLiquid Nitrogen液氮 LNLevel Normal正常液位 LngLining衬里 LNGLiquefied Natural Gas液化天然气 LoLubrication oil润滑油 LoLow低LOALength Over-All全长总长LOCLocation位置LogLogarithm(to the base 10)对数（以10为底）LongLongitudinal纵向LPLow Pressure低压LPGLiquefied Petroleum Gas液化石油气LTLow Temperature低温LTLeak Testing气密试验LtdLimited有限LtrLetter字母、信LubLubricate润滑LWLap Welding搭接焊LWNLong Welding Neck对焊长颈LWSLongitudinal Welded Seam纵向焊缝M(m)Meter米、公尺MachMachine机器MaintMaintenance维修Mat(Matl)Material材料MAWPMaximum Allowable Working Pressure最大允许工作压力MaxMaximum最大MDMTMin. Design Metallic Temperature最低设计金属温度MechMechanical机械的MfdManufactured制造的MfrManufacturer制造商MG(mg)Milligram毫克MHManhole人孔MIMelt Index熔融指数MIGMetal Inert Gas Arc Welding 熔化极惰性气体保护焊MinMinimum最小MIN(min)Minute分钟MJGMetallic Jacketed Gasket金属包复垫片MkMark标志mlMilliliter毫升mmMillimeter毫米MPMedium Pressure中压MPCMaximum Permissible Concentration最大许用浓度MSMedium Pressure Steam中压蒸汽MSMedium Steel中碳钢MSLMean Sea Level平均海平面MTMagnetic Particle Examination磁粉检测MTDMean Temperature Difference平均温差MtdMounted安装、装配MTRMaterial Testing Report材料试验报告MUMeasurement Unit测量单位MVMean Value平均值MWMineral Wool矿渣棉NNorth北NANot Applicable不适用的NATNatural天然的NatlNational国家的NCAmerica National Coarse Thread美制粗牙螺纹NDTNondestructive Testing无损检验NegNegative负NFAmerican National Fine Thread美国细牙螺纹NipNipple螺纹管接头、短节NomNominal名义NorNormal正常NOZNozzle接管NPSAmerican Standard Straight Pipe Thread美国标准直管螺纹NPSHANet Positive Suction Head Available有效汽蚀裕量NPSHRNet Positive Suction Head Required要求汽蚀裕量NPTAmerican Standard Taper Pipe Thread美国标准锥管螺纹NTNet Tonnage净吨数NTPNormal Temperature and Pressure标准温度和压力NTSNot To Scale不按比例NumNumber数、编号、号码ObjObject目标、对象OCOperating Characteristic操作特性ODOutside Diameter外径OHOpen Hearth平炉OperOperating操作OppOpposite对面、相反OROutside Radius外半径OROutside Ring外环OrienOrientation方位OvhdOverhead高架的、顶部的OxygOxygen氧PPage页PPressure压力ParParallel平行ParaParagraph节、段PcPiece件PEPolyethylene聚乙烯PFDProcess Flow Diagram工艺流程图PerformPerformance性能PFPower Factor功率因素PIDPiping & Instruments Diagram管道和仪表流程图PlPlate板PneumPneumatic气、气动POPurchase Order订货单PortPortable便携式、轻便PositPositive正Posit Position位置ppbParts per billion十亿分之几ppmParts per million百万分之几ProdProduct产品ProjProject项目、工程PSPolystyrene聚苯乙烯psfPounds per square feet磅/平方英尺psiPounds per square inch磅/平方英寸PTLiquid Penetrants Examination液体渗透检测PTFEPolytetrafluoroethylene聚四氟乙烯PVAPolyvinyl Acetate聚醋酸乙烯PVALPolyvinyl Alcohol聚乙烯醇PVCPolyvinyl Chloride 聚氯乙烯PWHTPost Weld Heat Treatment焊后热处理QA Quality Assurance质量保证QCQuality Control质量控制QtyQuantity数量Qual Quality质量RRadius半径RadRadial径向RCRockwell Hardness洛氏硬度RecipReciprocate往复式RecircRecirculate再循环RecomRecommended建议、推荐RefReference参照、基准RefractRefractory耐火材料RegRegulator调节器RegenRegenerator再生器、再生塔ReinfReinforce加强RelRelative相对RepReport报告RepRepeat重复ReqdRequired要求、需要的REVRevision修改、版次RevReview评论、检查RevRevolution旋转、转数RFRaise face突台面RHRelative Humidity相对湿度RHRight Hand右手RMSRoot Mean Square均方根ROTRotating旋转rpmrevolutions per minute转/分rpsrevolutions per second转/秒RTRadiographic Examination射线照相检验SSouth北SAWSubmerged Arc Welding埋弧焊ScScale刻度、比例SCStandard Condition标准状态（温度压力）SCHSchedule表号、管厚号、进度SecSecond秒SecSection剖面、节、段SegSegment节、段SepSeparator分离器SeqSequence次序、顺序SGSpecific Gravity比重SHPShaft Horsepower轴马力SIStandard International国际单位制SigSignal信号SldSolid固体SMAWShield Metal Arc Welding手工焊SmlsSeamless 无缝的SOSlip on平焊（法兰）SolSolution溶液SPSpare parts备件SpSpecial特殊的、专门的SPStatic pressure静压力SpecSpecification说明、规定SpGrSpecific Gravity比重SqSquare方形、平方SRStress Relief消除应力SSStainless Steel不锈钢StaStation站STDStandard标准STDWTStandard Weight标准重量STLSteel钢STPStandard Temperature and Pressure标准温度和压力SucSuction吸入SupplSupplement补充SWShop Welding车间焊接SWSpot Weld点焊SWSocket Welding承插焊（法兰）SWPSafety Working Pressure安全工作压力SYMSymbol符号、标志SYMSymmetry对称SYSSystem系统TTon吨TCTungsten Carbide碳化钨TechTechnique技术TEMATubular Exchanger Manufacturers Association管壳式换热器制造商协会（美国）TempTemperature温度TermTerminal终端、接头ThkThickness厚度TIGTungsten Inert Gas Arc Welding钨极惰性气体保护焊TLTangent line切线TolTolerance公差TotTotal总TransTransfer输送器TWTotal Weight总重TWTack Welding定位焊TypTypical典型、标准UNC Unified National Coarse Thread统一标准粗牙螺纹UNFUnified National Fine Thread统一标准细牙螺纹USUndersize尺寸过小UTUltrasonic Examination超声波探伤UTSUltimate Tensile Strength抗拉强度极限VacVacuum真空VapVapor蒸汽VarVariable变化、变量VelVelocity速度VertVertical垂直VolVolume体积VTVisual Testing宏观（目测）检查WWatt瓦WLWelding Line焊缝线WLWater Line水线WPSWelding Procedure Specification焊接工艺规程WPWorking Pressure工作压力WRCWelding Research Committee焊接研究委员会（美国）WSWater Supply供水WTWeight重量W/V Wind Velocity风速XRX-RayX射线YdYard码YPYield Point屈服点YrYear年ACCESS Accessory 附件 ADJ Adjustable,Adjust 调整ADPT Adapter 使适应 ADV Advance 提前AL Aluminum 铝 ALLOW Allowance 允许ALT Alternate 改变ALY Alloy 合金AMT Amout 数量ANL Anneal 锻炼ANSL Amer Natl Stds Institute APPROX Approximate 大约ASME Amer Society of Mech Engrs ASSEM Assemble 装配ASSY Assembly 装配AUTH Authorized 授权的AUTO Automatic 自动的 AUX Auxiliary 辅助的AVG Average 平均AWG American Wire Gauge BC Bolt Circle 螺栓圆周BET Between 之间BEV Bevel 斜角BHN Brinell Hardness Number 布氏硬度值BLK Blank ,Block 空白B/NM Bill of Material 材料费BOT Bottom 底部BP or B/P Blueprint 蓝图BRG Bearing 轴承 BRK Break 破裂BRKT Bracket 支架BRO Broach 钻孔BRS Brass 黄铜BRZ Bronze 青铜BS BrownShape 棕色形状BSC Basic 基本的BUSH Bushing 套管BWG Birmingham Wire Gauge C TO C Center-to-Center 中心到中心CAD Computer-Aided Drafting 电脑辅助设计CAM Computer-Aided Mfg CAP Capacity 容量CAP SCR Cap Screw 螺帽CARB Carburize 使渗碳CBORE Counterbore 扩孔CCW Counter Clockwise 逆时针CDRILL Counerdrill CDS Cold-Drawn Steel EFF Effective 有效的ENCL Enclose,Enclosure 附上ENG Engine 引擎ENGR Engineer 工程师ENGRG Engineering 工程学EQLSP Equally Spaced 等距EQUIV Equivalent 相等EST Estimate 估计EX Extra 额外EXH Exhaust 消耗EXP Experimental 实验性的EXT Exension,External 范围,外部FAB Fabricate 伪造FAO Finish All Over FDRY Foundry 铸造FIG Figure 数据FIL Fillet,fillister 带子FIM Full Indicator Movement FIN Finish FLX Fixture 结构FLX Floor.Fluid,Flush 基地,液体,冲洗FLEX Flexible 易弯曲的FLG Flange 边缘FORG Forging 锻炼FR Frame,Front 边框FIG Fitting 装置FURN Furnish 提供FWD Forward 向前GA Gage,Gauge 测量GALV Galvanized 电镀GR Grade 等级GRD Grind 磨碎GRV Groove 凹槽GSKT Gasket 垫圈HG Harden and Grind 加硬和磨碎HD Head 主要的HDL Handle 处理HDLS Headless 无领导的HDN Harden 使硬化HDW Hardware 硬件HEX Hexagon 六边形HGR Hanger 衣架HGT Height 高度HOR Horizontal 水平的HRS Hot-Rolled Steel HSG Housing 外罩HT TR Heat Treal 缩写 全称 翻译NTS Not to Scale OA Over All 所有OBS Obsotetc OC On Center OD Outside Diameter 外直径OPP Opposite 对立OPTL Optional 可选择的OR Outside Radius 外半径ORIG Original 初始的PAT. Patent 专利PATT Pattern 形式PC Piece,Pitch Circle 件，节距圆PCH Punch 打孔PD Pitch Diameter PERF Perforate 打孔PERM Permanent 永久的PERP Perpendicular 垂直的PFD Preferred 首选的PKG Package,Packing 包装PL Parting Line,Places,Plate PNEU Pncumatic PNL Panel 面板POL Polish 磨光POS Position,Postive 位置PR Pair 对立PRI Primary 基本的PROC Process 程序PROD Product,Production 产品，产量PSI Pounds per Square Inch PT Part,Point 零件，点QTR Quarter 四份之一QTY Quantity 数量QUAL Quality 质量R Radius 半径RA Rockwell Harden,A-Scale RB Rockwell Harden,B-Scale RC Rockwell Harden,C-Scale RECD Received 巳收到的RECT Rectangle 长方形REF Reference 相关的REINF Reinforce 增强REL Release,Relief 释放，缓解REM Remove 移除REQD Requird 有需要REE Retainer,Return REV Reverse,Revision,Revolution RFS Regardless of Feature Size RGH Rough 粗糙的RH Right Hand 右手RIV Rivet 起皱RM Ream 扩展RND Round 周围RPM Revolutions per Minute RPW Resistance Projection Weld SAE Society of Automotive Engrs SCH Schedule 进度表CFS Cold-Finished Steel CH Case Harden CHAM Chamfer 斜面 CHAN Channel 渠道 CHG Change 改变 CHK Check 核查 CI Cast Iron 铸铁 CIR Circle, Circular 圆周 CIRC Circumference 圆周CL Centerline 中心线 CLP Clamp 夹子 CNC Computer Numerical Control 电脑数值控制 COMB Combination 联合 COML Commercial 商业的 CONC Concentric 同中心的 CONN Connect,Connector 连接器 COV Cover 盖子 CPLG Coupling 联结CQ Commercial Quality 商业等级钢 CRS Cold Stds Association CRT Cathode Ray Tube 阴级射线管 CS Cast Steel 铸铁 CSA Canadian Stds Association CSK Countersink 埋头孔 CSTG Casting 铸件 CTR Center 中心 CU Cubic 立方米 CW Clockwise 顺时针 CYL Cylinder,Cylindrical 柱面 DBL Double 双倍 DEC Decimal 小数 DEG Degree 摄氏度 DET Detail 详情 DEV Develop 发展 DFT Draft 草稿 DIA Diameter 直径 DIM Dimension 尺寸 DIST Distance 距离 DN Down 向下 DP Deep,Diametral Pitch 深度,径节 DR Drill,Drill Rod 钻孔 DSGN Design 设计 DVTL Dovetail 吻合 DWG Drawing 图纸 DWL Dowel 木钉 DWN Drawn 拔出 EA Each 每个 ECC Eccentric 古怪 HVY Heavy 重量 HYD Hydraulic 水压 ID Inside Diameter 内部直径 IDENT Identification 鉴定 ILLUS Illustration 说明 IN Inch 英寸 INCL Include,Including 包括 INCR Increase 增加 INFO Information 信息 INSP Inspect 检查 INSTL Install 安装 INST Instruct,Instrument 指示,工具 INT Interior,Internal,Intersect 内部的,内在的,交叉 IR Inside Radius 内部半径 ISO Internal Stds Organization 国际标准化组织 JCT Junction 连结 JNT Journal 杂志 JT Joint 连接 K Key 关键 KNRL Knurl 硬节 KST Keyseat KWY Keyway 键沟 LB Pound 英镑 LBL Label 标签 LG Length,Long 长度 LH Left Hand 左手 LMC Least Material Condition LOC Locate 位于 LT Light 光 LTR Letter 信 LUB Lubricate 润滑 MACH Machine 机器 MAINT Maintenance 维护 MATL Material 材料 MAX Maximum 最大 MECH Mechanical,Mechanism 机械 MED Medium 媒介 MFG Manufacturing 制造业 MI Malleable Iron 可锻造的铁 MIN Minimum, Minute 最小，秒 MISC Miscellaneous 混杂的 MM Millimeter 毫米 MMC Max Material Condition MS Machine Steel MTG Mouting 装备 MULT Multiple 倍数 MWG Music Wire Gagug NA Not Applicable 不可应用的 NATL National 国内的 NC Numerical Control 数字电脑控制 NEG Negative 忽略的 NO. Number 号码 NOM Nominal 名义上的 NPSM Natl Pipe Straight Mech NPT Natl Pipe Tapered SCR Screw 螺丝 SEC Second 秒 SECT Section 部分 SEP Separate 独立 SEQ Sequence 顺序 SER Serial,Series 系列 SERR Serrate 锯齿状 SF Spotface SFT Shaft 轴 SGL Single 单个 SH Sheet 纸 SI Intl System of Units SL Slide 使滑动 SLV Sleeve 袖子 SOC Socket 插座 SP Space,Spaced,Spare 空间 SPL Special 特别 SPEC Specification 规格 SPG Spring 跳 SPHER Spherical 球体 SPRKT Sprocket 链轮齿 SQ Square 平方 SST Stainless Steel 纯铁 STD Standard 标准 STK Stock 存货 STL Steel 铁 STR Straight,Strip 直的 SUB Substitute 替代物 SUP Supply,Support 供应 SURF Surface 表面 SYM Symmetrical 对称的 SYS System 系统 T Teeth,Tooth 牙齿 TECH Technical 技术 TEMP Template,Temporary 模板，暂时的 THD Thread 线 THK Thick 厚的 TOL Tolerance 公差 TOT Total 总计 TPF Taper per Foot TPI Taper per In,Threads per Inch TPR Taper 锥形 TS Tool Steel TYP Typical 典型 UNC Unified Natl Coarse UNEF Unified Natl Extra Fine UNF Unified Natl Fine UNIV Universal 普遍 VAR Variable 变量 VERT Vertical 垂直的 V