常用机械专业英语对照Cutting: 切割socket weld承插焊接fillet weld角焊,填角焊branch connection分支接续fabrication tolerance.制造容差local heat treatment 局部热处理threaded pipe螺纹管seal welding.密封焊接flange joint 凸缘接头undercut 底切feeder馈电线conduit outlet电线引出口seal fitting 密封接头, 密封配件Screw thread lubricant螺纹润滑剂Seal: 绝缘层weld reinforcement 焊缝补强lock washer 锁紧[止动, 防松]垫圈electrical panel.配电板,配电盘nipple螺纹接头zinc plated.镀锌的ring joint 环接, 围缘接合bolt 螺栓control: 控制器National Electrical Code 全国电气规程master schedule 主要图表, 综合图表, 设计任务书, 主要作业表torque wrench 转矩扳手job site 施工现场flange connection.凸缘联接Hard hat：安全帽Goggles：护目镜stockpile贮存packing list装箱单crate: 柳条箱purchased material list原材料进货单back-feed反馈wire coil线盘，线卷，NPT thread. 美国标准锥管螺纹cable gland 电缆衬垫terminal block线弧, 接头排接线盒, 接线板, 线夹power drill机械钻connector. 接线器insulated sleeve绝缘套管wire connector接线器wire terminal电线接头control wiring控制线路motor lead电动机引出线power wiring电力布线tender document．提供证件orifice plate.挡板nut 螺母flange gasket 法兰垫片dimensional inspection 尺寸检验burn through 烧蚀piping system.管道系统reinforcement of weld加强焊缝fabrication.制造dye penetrant examination染料渗透试验法magnetic particle examination 磁粉检验girth weld环形焊缝cement lined piping 水泥衬里weld joint 焊缝, 焊接接头spool drawing 管路图, 管路详图spot test 抽查, 当场测试butt weld 对接焊缝Random Radiography随机射线照相检查radiographic examination 射线照相检查assembly.装配erection 架设examination试验cable tray.电缆盘rigid steel conduit 钢制电线管power control 功率控制arc welding 电弧焊control cable控制电缆操纵索normal bend 法向[法线]弯管cable glands: 电缆衬垫exfoliation剥落power receptacle 电力插座grounding conductor 接地导体lighting fixture照明器材junction box 分线箱race way 电缆管道terminal box接线盒distribution board配电盘, 配电屏receptacle 插座tumble switch.翻转开关,拨动式开关cathodic protection system 阴极保护系统Circuit breaker断路开关amplifier panel 放大器盘control console 控制台electrical material电气材料convenience receptacle.电源插座cable gland 电缆衬垫TIG：Tungsten-arc Inert-Gas welding 钨极电弧惰性气体保护焊filler rod焊条tensile strength 抗张强度shield gas 保护气体shield jig保护夹具high frequency generator.高频发电机welding rod 焊条filler metal 焊料, 焊丝shop fabrication 车间制造field installation 现场安装welding bead 焊道both sides welding.双面焊接residual stress 残余应力electrode 电焊条condensation 冷凝longitudinal.纵向的horizontal line 水平线circumferential joint 周圈接缝nondestructive examination.非破坏性检验, qualification: 合格性construction work施工工程welded joint焊接缝焊接节点gas cutting.气割arc cutting电弧切割grind off 磨掉metallic luster 金属光泽Screwed Piping Joints螺丝状的管接头gouging .刨削槽Bending: 挠曲witness test订货人在场的试验Welding: 焊接Threading: 车缧纹Leveling：校平color identification 彩色识别Alignment：对准,定位调整check against 检查, 核对Fixing：固定Console：控制台cubicle室,箱audit 审计material certificate.材料合格证vertical panel竖直面板power distribution panel 配电盘gauge board仪表板beveling 磨斜棱,磨斜边local panel 现场配电盘grouting 灌浆fabrication 加工,制造instrument rack 计测器支架tank gauge 液面计flushing 冲洗，填缝analyzer分析器piping管道敷设tubing敷设管道cable fitting电缆配件elbow.弯管接头main pipe 主管道bend.弯管弯头solvent 溶剂postweld heat treatment 焊后热处理jig.夹具arc gouging 电弧刨削chipping修琢machining 机械加工bridges.管式桥clamp.夹钳压力容器基本词汇安全阀 safety valve安装 Installation鞍式支座 saddle support凹面 concave半球形封头 Hemispherical heads棒 bars保温支撑 insulation support [wiki]爆炸[/wiki]性 explosive泵 pump变径段 reducers标记 stamping标志 marking标志的移植 Transferring marking波纹板 Corrugating Paper补强管 reinforcing nozzle补强圈 reinforcing ring不锈钢 stainless steel不圆度out-of-roundness材料materials材料证明书Certification of material 超声检验Ultrasonic Examination衬里Linings成型Forming成型封头Formed heads尺寸Dimensions翅片管finned tubes冲击试验impact test储罐storage tank传热面积heat transfer surface磁粉检验Magnetic Particle Examination次要应力secondary stress粗糙度roughness淬火Quenching带折边的锥形toriconical弹簧springs弹簧垫圈spring washer弹性模量 modulus of Elasticity挡板baffle plate低合金钢容器low alloy steel vessels低温容器Low-temperature vessels地震烈度seismic intensity垫板Backing strip垫片gasket垫圈washer碟形封头Dished heads顶丝jackscrew定距管spacer定位销pin dowel定义Definitions毒性toxicity镀锌容器Galvanized vessels锻件Forgings对焊[wiki]法兰[/wiki] welding neck flange耳座lug[wiki]阀门[/wiki] valves法兰flanges法兰接触面Flange contact facings防冲板impingement baffle防[wiki]腐蚀[/wiki]衬里Corrosion resistant linings防火fire protection防涡流挡板vortex breaker非受压件nonpressure parts非圆形容器Noncircular vessels分析analysis峰值应力peak stress腐蚀裕量corrosion allowance附加载荷supplementary loading附件attachments复合板Clad plate覆层容器clad vessels盖板Cover plates杆rods and bars刚性Stiffness高合金容器high-alloy vessels工作温度operation/service temperature 工作压力operation pressure固定的fixed管板tube sheet管壳式换热器shell and tube heat exchanger 管口材料表sheet of material for nozzle管口方位nozzle orientation管箱channel管子pipes nozzle tube管嘴nipple罐桶槽tank过渡段transition in过渡圆角Knuckles焊后热处理after post weld heat treating焊接工艺welding procedure specification焊接接头welding joints焊接系数welding coefficient厚度thickness滑动的sliding环向应力hoop stress回火 tempering基本地震加速度basic seismic acceleration基本分压basic wind pressure计算厚度calculated thickness技术条件form of Specification加强圈stiffening rings夹套容器Jacketed vessels检查孔Inspection openings检验inspection角焊Fillet welds接地板earth lug截止阀Stop valves介质特性fluid property金属温度Metal temperature筋板rib plate径向应力radial stress静(压力)水头static head局部areas局部local局部焊后热处理Local postweld heat treatment矩形设计rectangular design卡箍clamp开孔补强reinforcement for openings快开盖Quick-actuating closures拉杆tie rod裂缝Cracking流体（介质）fluid螺孔holes for screw螺母nut螺塞plug螺栓bolt螺纹threaded螺柱studs名义厚度nominal thickness铭牌Nameplates内部构件Internal structures内衬筒internal shell盘管coil tube配件fittings膨胀节expansion joint平封头Flat heads评定Qualification气孔Porosity气压试验Pneumatic test钎焊brazing强度strength of球形封头spherically dished曲率 curvature屈服yielding全容积total volume缺陷defects群座skirt support热处理thermal treatment热处理heat treatmen热应力thermal stress人孔 manholes韧性ductility容积volume容器vessel容器净重empty weight容器类别vessel classification塞焊Plug welds设计压力design pressure射线超声检验Radiographic Examination渗透检验Penetrant Examination石墨graphite试样Test coupons适用范围Scope手孔handholes水压试验hydrostatic test/hydraulic test/hydrotest碳钢carbon steel搪玻璃容器enameled vessels梯子、平台ladders, platforms填充金属filler metal筒体shell 凸面convex凸缘socket椭圆封头Ellipsoidal heads外压容器vessels subjected to external pressure未注尺寸公差tolerance grade not noted无支撑unstayed系数factor现场安装Field assembly校核checking of泄放Discharge泄压装置Pressure relieving devices性能properties许用工作压力allowable working pressure许用应力allowable stress易然的flammable应力腐蚀stress corrosion应力集中stress concentration预热Preheating圆度roundness圆角和倒角corners and fillets载荷Loadings胀接expanded connections折流板baffle plate蒸发器Evaporators直边长度length of skirt直径Diameter制造fabrication制造厂fabricator制造方法methods of fabrication制造工艺fabrication technology周长Girth主应力primary stress柱状壳体Cylindrical shells铸铁容器cast iron vessels转角半径knuckle radius装配assembling锥度tapered锥壳conical shell锥形封头Conical heads资格qualification纵向接头 Longitudinal joints组对fitting uppipe closure管塞end closure 端盖orifice plate 挡板exial spacing 轴向间距manufacture tolerance 制造公差acid passivation 酸洗钝化part drawing 零件图stud bolts 双头螺柱化工设备常用词汇和缩写中英文对照化工设备常用词汇和缩写中英文对照缩写/ 英文/中文AB Anchor Bolt 地脚螺栓Abs Absolute 绝对的Abs Abstract 文摘、摘要A/C Account 帐、帐目AC Alternating Current 交流电Add Addendum 补充、补遗、附录ADL Acceptable Defect Level 允许的缺陷标准Adpt Adapter 连接器、接头AE Absolute Error 绝对误差AET Acoustic Emission Examination 声发射检验AISC American Institute of Steel Construction 美国钢结构学会AISI American Iron and Steel Institute 美国钢铁学会AL Aluminium 铝Alk Alkaline 碱的、强碱的ALM Alarm 报警Alt Alternate 交流、改变Amb Ambient 周围的Amt Amount 数量、金额Anh Anhydrous 无水的ANSI American National Standard Institute 美国国家标准学会API American Petroleum Institute 美国石油学会App Apparatus 设备App Appendix 附录、补遗Appl Applied 应用的Appl Applicable 适当的、合适的Approx Approximate 大约、近似Appx Appendix 附录、附件Arrgt Arrangement 布置AS Alloy steel 合金钢Asb Asbestos 石棉ASL Above Sea Level 海拔高度ASM American Society for Metals 美国金属学会ASME American Society of Mechanical Engineers 美国机械工程师学会Assem Assembly 装配ASTM American Society for Testing and Materials 美国材料试验学会Atm Atmosphere 大气atm Atmosphere pressure 大气压Auto Automatic 自动Aux Auxiliary 辅助设备、辅助的Avail Available 有效的、可用的Avg Average 平均AW Arc welding 电弧焊AW Automatic 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BAB Babbitt Metal 巴氏合金Baf Baffle 折流板、缓冲板BB Ball Bearing 滚珠轴承BC Between Centers 中心距、轴间距BC Bolt circle 螺栓中心圆BD Blow down 放空、放料BEDD Basic engineering design data 基础工程设计数据Bet Between 在…之间Bev Bevel 斜角、坡口BF Back face 背面、反面BF Blind flange 法兰盖（盲法兰）BHN Brinell hardness number 布氏硬度值BL Battery Limit 界区BL Battery Line 界区线B/L Bill of Loading 载荷数据表Bld Blind 盲板Blk Black 黑色Blk Blank 空白BM Bench Mark 基准标志BM Bending Moment 弯矩B/M (BOM) Bill of Material 材料表Bot Bottom 底BP Back Pressure 背压BP Base plate 底板BR Basic Requirements 基本要求BRG Bearing 轴承BRKT Bracket 支架Brs Brass 黄铜BS Both Side 两边BS British Standard 英国标准BS Balance Sheet 平衡表Bskt Basket 筐BTU British Thermal Unit 英国热量单位BV Back View 后视图BV Butterfly Valve 碟阀BW Brine Vater 冷冻盐水BW Butt Welding 对焊BWG Birmingham Wire Gauge 伯明翰线规BWRA. British Welding Research Association 英国焊接研究协会C Centigrade(degree) 摄氏度数CA Chemical Analysis 化学分析CA Corrosion Allowance 腐蚀裕量Calc Calculate 计算Cap Capacity 能力、容量CAS Cast Alloy Steel 铸造合金钢Cat Catalyst 触媒、催化剂Catg Catalog 目录、样本C-C(C/C) Center to center 中心距cc carbon copy 复写（纸复制）本cc cubic centimeter 立方厘米CCW Counter clockwise 反时针方向CD Cold Drawn 冷拉的、冷拔的CE Covered Electrode 焊条Cent Centrifugal 离心的CF Centrifugal Force 离心力CFW Continuous Fillet Weld 连续角焊缝CG Center of Gravity 重心CH Case-Hardening 表面硬化Ch Chapter 章节Cham Chamfer 倒角、斜角、斜面Chan Channel 通道、沟槽、管箱、槽钢Chk Check 检查CI Cast Iron 铸铁CIF Cost，Insurance and Freight 到岸价格Circ Circumference 圆周、环向CL Class 等级、类别CL Center Line 中心线CL Clearance 间隙CLAS Cast Low Alloy Steel 低合金铸钢CM Center of Mass 质量中心Cnds Condensate 冷凝液CO Clean Out 清除Co Company 公司Coef Coefficient 系数Col Column 柱、塔Comb Combination 组合Comp Compare 比较Comp Compound 化合物、复合的Compn Composition 组分Conc Concrete 混凝土Conc Concentration 浓度Cond Conductor 导体Cond Condition 条件Conn Connection 联接、接口Const Constant 常数、恒定的Const Construction 结构Cont Control 控制Cont Contain 包含Cont Content 内容、含量Corp Corporation 公司Corr Corrosion 腐蚀CP Centipoise 厘泊CP Center of Pressure 压力中心Cpl Coupling 管箍Cplg Coupling 联轴节CR Chloroprene Rubber 氯丁橡胶CS Carbon Steel 碳钢CS Center Section 中心截面CSTG Casting 铸造、铸件Ctr Center 中心CW Cooling Water 冷却水CW Continuous Welding 连续焊Cy Cycle 循环Cyl Cylinder 气缸、圆筒D Density 密度Dbl Double 二倍、双DEDD Detail Engineering Design Data 详细工程设计数据Def Definition 定义Deg Degree 度、等级Dept Department 部门Des Design 设计Det Detail 详细Detn Determination 确定、决定Dev Deviation 偏差Dev Device 装置DF Design Formula 设计公式Df Deflection 偏斜Dia Diameter 直径Diag Diagram 图Dim Dimension 尺寸Dir Direction 方向Disch Discharge 排出、出口Distr Distribution 分布Div Division 部分、区分DL Dead load 静载荷、自重Doc Document 文件、资料DP Design Pressure 设计压力DP Differential Pressure 压差、分压Dr Drill 钻孔Dr Drive 驱动DW Dead weight 静重、自重DW Demineralized Water 脱盐水Dwg Drawing 图E East 东EC Elasticity Coefficient 弹性系数Ecc Eccentric 偏心EF Electric Furnace 电炉Eff Efficiency 效率eg exempli gratia 例如EHP Effective Horsepower 有效功率EJ Expansion joint 膨胀节EL Elevation 标高Elb Elbow 弯头Elec Electric 电的Elem Element 元素、元件Ellip Ellipsoidal 椭球的、椭圆的Emer、Emerg Emergency 事故、紧急Encl Enclosure 密封、封闭Engrg、Eng Engineering 工程、设计EP Explosion Proof 防爆Eq Equipment 设备Eq Equation 公式、方程式Eq Equivalent 当量ES Electrostatic 静电EST Estimate 估计ESW Electro-Slag Welding 电渣焊ET Eddy Current Examination 涡流检验etc et cetera (and so on) 等等Evap Evaporate 蒸发Ex Example 例如Ex Excess 过剩、超过Exam Examination 检验Exh Exhaust 废气、排气Exp Expansion 膨胀Exptl Experimental 实验的Ext External 外部Ext Extreme 极端的FAO Finish All Over 全部加工FAX Facsimile 传真FB Flat Bar 扁钢FCAW Flux Cored Arc Welding 熔剂芯弧焊（手工焊）Fdn Foundation 基础FDW Feed Water 给水FF Flat Face 平面F/F Field Fabricated 现场制造Fig Figure 图Fin Finish 加工、完成FL Full Load 满载Flex Flexible 挠性Flg Flange 法兰FOB Free On Board 离岸价格FOC Free Of Charge 免费Forg Forging 锻件FOS Factor Of Safety 安全系数FREQ Frequency 频率FST Forged Steel 锻钢Ft Feet 英尺Ftg Fitting 管件、装配F.V. Full Vacuum 全真空FW Fresh Water 新鲜水FW Field Weld 现场焊接FW Fillet Weld 角焊缝GA General Average 平均值Gal Gallon 加仑Gen General 一般、总的Genr Generator 发电机、发生器GF Groove Face 槽面Gl Glass 玻璃GL Ground Level 地面标高GMAW Gas Metal Arc Welding 气体保护金属极电弧焊Gnd Ground 接地、地面Govt Government 政府GP General Purpose 一般用途、通用Gr Grade 等级Gr Gravity 重力Grd Ground 地面Grp Group 分组、类Gr- wt Gross weight 总重、毛重HB Brinell Hardness 布氏硬度HC Hydrocarbon 烃类HC High Capacity 大容量HD Head 压头Hex Hexagon 六角HH Hand Hole 手孔Hor Horizontal 水平、卧式hp Horsepower 马力HP High Pressure 高压HR Rockwell Hardness 洛氏硬度HR(hr) Hour 小时HRC Rockwell C Hardness C级洛氏硬度HS High Pressure Steam 高压蒸汽HS Shore Scleroscope Hardness 肖氏硬度HSC High Pressure Condensate 高压蒸汽凝液HT High Temperature 高温HT Heat Treatment 热处理HT Hydrostatic Test 水压试验HV Vickers Hardness 维氏硬度Hvy Heavy 重的、重型的HW Hot Water 热水ICW Inter Cooling Water 中间冷却水ID Inside Diameter 内径IF Interface 交接面Illus Illustration 说明、图解IN Inlet 进口in Inch 英寸incl Including 包括Ind Indicate 指示Ins Insulation 保温INSP Inspection 检验Instl Installation 安装Int Internal 内部的Int Intermediate 中间的Intmt Intermittent 间歇的、间断的I/O Input/Output 输入/输出Jt Joint 连接、接头KG Kilogram 公斤KW(kw) Kilowatt 千瓦LAS Low Alloy Steel 低合金钢lb pound 磅LC Level Control 液位控制器Leng Length 长度LF Female Face 凹面Lg Long 长的LG Level Glass 液位计LH Left Hand 左手Lin Linear 线性的Liq Liquid 液体Lj Lap joint 搭接LJ Lapped Joint 松套LM Male Face 凸面LMTD Logarithmic Mean Temperature Difference 对数平均温差LN Liquid Nitrogen 液氮LN Level Normal 正常液位Lng Lining 衬里LNG Liquefied Natural Gas 液化天然气Lo Lubrication oil 润滑油Lo Low 低LOA Length Over-All 全长\总长LOC Location 位置Log Logarithm(to the base 10) 对数（以10为底）Long Longitudinal 纵向LP Low Pressure 低压LPG Liquefied Petroleum Gas 液化石油气LT Low Temperature 低温LT Leak Testing 气密试验Ltd Limited 有限Ltr Letter 字母、信Lub Lubricate 润滑LW Lap Welding 搭接焊LWN Long Welding Neck 对焊长颈LWS Longitudinal Welded Seam 纵向焊缝M(m) Meter 米、公尺Mach Machine 机器Maint Maintenance 维修Mat(Mat’l) Material 材料MAWP Maximum Allowable Working Pressure 最大允许工作压力Max Maximum 最大MDMT Min. Design Metallic Temperature 最低设计金属温度Mech Mechanical 机械的Mfd Manufactured 制造的Mfr Manufacturer 制造商MG(mg) Milligram 毫克MH Manhole 人孔MI Melt Index 熔融指数MIG Metal Inert Gas Arc Welding 熔化极惰性气体保护焊Min Minimum 最小MIN(min) Minute 分钟MJG Metallic Jacketed Gasket 金属包复垫片Mk Mark 标志ml Milliliter 毫升mm Millimeter 毫米MP Medium Pressure 中压MPC Maximum Permissible Concentration 最大许用浓度MS Medium Pressure Steam 中压蒸汽MS Medium Steel 中碳钢MSL Mean Sea Level 平均海平面MT Magnetic Particle Examination 磁粉检测MTD Mean Temperature Difference 平均温差Mtd Mounted 安装、装配MTR Material Testing Report 材料试验报告MU Measurement Unit 测量单位MV Mean Value 平均值MW Mineral Wool 矿渣棉N North 北NA Not Applicable 不适用的NAT Natural 天然的Natl National 国家的NC America National Coarse Thread 美制粗牙螺纹NDT Nondestructive Testing 无损检验Neg Negative 负NF American National Fine Thread 美国细牙螺纹Nip Nipple 螺纹管接头、短节Nom Nominal 名义Nor Normal 正常NOZ Nozzle 接管NPS American Standard Straight Pipe Thread 美国标准直管螺纹NPSHA Net Positive Suction Head Available 有效汽蚀裕量NPSHR Net Positive Suction Head Required 要求汽蚀裕量NPT American Standard Taper Pipe Thread 美国标准锥管螺纹NT Net Tonnage 净吨数NTP Normal Temperature and Pressure 标准温度和压力NTS Not To Scale 不按比例Num Number 数、编号、号码Obj Object 目标、对象OC Operating Characteristic 操作特性OD Outside Diameter 外径OH Open Hearth 平炉Oper Operating 操作Opp Opposite 对面、相反OR Outside Radius 外半径OR Outside Ring 外环Orien Orientation 方位Ovhd Overhead 高架的、顶部的Oxyg Oxygen 氧P Page 页P Pressure 压力Par Parallel 平行Para Paragraph 节、段Pc Piece 件PE Polyethylene 聚乙烯PFD Process Flow Diagram 工艺流程图Perform Performance 性能PF Power Factor 功率因素PID Piping & Instruments Diagram 管道和仪表流程图Pl Plate 板Pneum Pneumatic 气、气动PO Purchase Order 订货单Port Portable 便携式、轻便Posit Positive 正Posit Position 位置ppb Parts per billion 十亿分之几ppm Parts per million 百万分之几Prod Product 产品Proj Project 项目、工程PS Polystyrene 聚苯乙烯psf Pounds per square feet 磅/平方英尺psi Pounds per square inch 磅/平方英寸PT Liquid Penetrants Examination 液体渗透检测PTFE Polytetrafluoroethylene 聚四氟乙烯PV A Polyvinyl Acetate 聚醋酸乙烯PV AL Polyvinyl Alcohol 聚乙烯醇PVC Polyvinyl Chloride 聚氯乙烯PWHT Post Weld Heat Treatment 焊后热处理QA Quality Assurance 质量保证QC Quality Control 质量控制Qty Quantity 数量Qual Quality 质量R Radius 半径Rad Radial 径向RC Rockwell Hardness 洛氏硬度Recip Reciprocate 往复式Recirc Recirculate 再循环Recom Recommended 建议、推荐Ref Reference 参照、基准Refract Refractory 耐火材料Reg Regulator 调节器Regen Regenerator 再生器、再生塔Reinf Reinforce 加强Rel Relative 相对Rep Report 报告Rep Repeat 重复Reqd Required 要求、需要的REV Revision 修改、版次Rev Review 评论、检查Rev Revolution 旋转、转数RF Raise face 突台面RH Relative Humidity 相对湿度RH Right Hand 右手RMS Root Mean Square 均方根ROT Rotating 旋转rpm revolutions per minute 转/分rps revolutions per second 转/秒RT Radiographic Examination 射线照相检验S South 北SAW Submerged Arc Welding 埋弧焊Sc Scale 刻度、比例SC Standard Condition 标准状态（温度压力）SCH Schedule 表号、管厚号、进度Sec Second 秒Sec Section 剖面、节、段Seg Segment 节、段Sep Separator 分离器Seq Sequence 次序、顺序SG Specific Gravity 比重SHP Shaft Horsepower 轴马力SI Standard International 国际单位制Sig Signal 信号Sld Solid 固体SMAW Shield Metal Arc Welding 手工焊Smls Seamless 无缝的SO Slip on 平焊（法兰）Sol Solution 溶液SP Spare parts 备件Sp Special 特殊的、专门的SP Static pressure 静压力Spec Specification 说明、规定SpGr Specific Gravity 比重Sq Square 方形、平方SR Stress Relief 消除应力SS Stainless Steel 不锈钢Sta Station 站STD Standard 标准STDWT Standard Weight 标准重量STL Steel 钢STP Standard Temperature and Pressure 标准温度和压力Suc Suction 吸入Suppl Supplement 补充SW Shop Welding 车间焊接SW Spot Weld 点焊SW Socket Welding 承插焊（法兰）SWP Safety Working Pressure 安全工作压力SYM Symbol 符号、标志SYM Symmetry 对称SYS System 系统T Ton 吨TC Tungsten Carbide 碳化钨Tech Technique 技术TEMA Tubular Exchanger Manufacturers Association 管壳式换热器制造商协会（美国）Temp Temperature 温度Term Terminal 终端、接头Thk Thickness 厚度TIG Tungsten Inert Gas Arc Welding 钨极惰性气体保护焊TL Tangent line 切线Tol Tolerance 公差Tot Total 总Trans Transfer 输送器TW Total Weight 总重TW Tack Welding 定位焊Typ Typical 典型、标准UNC Unified National Coarse Thread 统一标准粗牙螺纹UNF Unified National Fine Thread 统一标准细牙螺纹US Undersize 尺寸过小UT Ultrasonic Examination 超声波探伤UTS Ultimate Tensile Strength 抗拉强度极限Vac Vacuum 真空Vap Vapor 蒸汽Var Variable 变化、变量Vel Velocity 速度Vert Vertical 垂直V ol V olume 体积VT Visual Testing 宏观（目测）检查W Watt 瓦WL Welding Line 焊缝线WL Water Line 水线WPS Welding Procedure Specification 焊接工艺规程WP Working Pressure 工作压力WRC Welding Research Committee 焊接研究委员会（美国）WS Water Supply 供水WT Weight 重量W/V Wind Velocity 风速XR X-Ray X射线Yd Yard 码YP Yield Point 屈服点Yr Year 年external/outide diameter 外径grease 油污。