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AnIntroductiontoMechanicalEngineering–NewWords1生词（1）——Units生词（2）螺纹紧固件与传动螺杆fastener紧固件Screw螺钉Blindhole盲孔Throughhole通孔Threadedhole螺纹孔Tappedhole螺纹孔Bolt螺栓Stud双头螺栓Threadedrod螺杆Threadhead螺纹头Washer垫圈Flathead平头Hexagonal六角的Fillister圆头Thermalexpansion热膨胀Dilation膨胀Axial轴向的Helix螺旋Surfacetreatment表面处理Surfacecondition表面条件Clampingsurface夹紧面Plasticflow塑性滑移Lockwasher防松垫圈Slottednut开槽螺母Locknut防松螺母Springtension弹簧张力Wedge楔入Splitwasher开口挡圈Toothedlockwasher齿式锁紧垫圈Slottednut开槽螺母Castlenut蝶形螺母Cotterpin开口销Matingpart配件Dimensionalconsistency量纲一致性Pico-微微Significantdigits有效数字Femto-毫微微approximation估计Angstrom埃Orderofmagnitude数量级fuselage机身Baseunits基本单位Heium氦Derivedunit导出单位Neon氖standardization标准化Barcode条形码Luminousintensity光强Elasticmodulus弹性模量kelvin开氏温标Chuck卡盘meridian子午线Deflection变形circumference周长Drillbit钻头platinum铂Machnumber马赫数iridium铱Coefficient系数Momentofforce动量Dragforce阻力Tera-兆兆Denominator分母Giga-十亿Impulse冲量Hector-百Cruisingaltitude巡航高度Deka-十AnIntroductiontoMechanicalEngineering–NewWords2Externalthread外螺纹Internalthread内螺纹Righthanded右旋Lefthanded左旋Multiplethreaded多头螺纹Pitch螺距Lead导程Leadangle导程角，螺旋升角Majordiameter大径Pitchdiameter节径，中径Minordiameter小径Powerscrew传动螺杆Linearactuator线性致动器Ball-bearingscrew滚珠丝杠Slidingfriction滑动摩擦Staticfriction静摩擦铆钉Rivet铆钉Hammer锤Forge鍛弹簧Torsionbarspring扭杆弹簧Helicalcompressionspring螺旋压簧Helicalextensionspring拉力弹簧Elongate拉长Torsionspring扭簧Helicalspring螺旋弹簧Spiralspring盘簧轴承Journalbearing滑动轴承Rolling-elementbearing滚动轴承Lubrication润滑剂Journal轴颈Lubricationmode润滑模式Boundarylubrication边界润滑Mixedlubrication混合润滑Hydrodynamiclubrication流体动力润滑Momentaryoverload瞬时过载Damp阻尼滚动轴承Innerring内圈Fatigue疲劳Outerring外圈Fail失效Rollingelements滚动体Ballbearing球轴承Cage保持架Straightrollerbearing直滚珠轴承Seal密封Taperedrollerbearing斜滚柱轴承Thrustforce轴向力Truncatecone截顶锥Radialforce径向力Thrustrollerbearing止推滚子轴承Housing轴承座生词（3）齿轮Gear齿轮Spurgear直齿齿轮externalgear外齿轮internalorringgear内齿轮Pinion驱动齿轮Gear被动齿轮gearset齿轮对mesh啮合AnIntroductiontoMechanicalEngineering–NewWords3Tooththickness齿厚Toothspace:齿隙Module模数GearRatio齿轮传动比GearTrain齿轮连SimpleGeartrain单式齿轮链Idlegears惰轮CompoundGeartrain复式齿轮链PlanetaryGeartrains行星齿轮链planetgear行星齿轮sungear中心轮carrier保持架，系杆spider多脚架BevelGear锥齿轮，伞齿轮Straight-toothbevel直齿伞齿轮gearspiralbevelgear螺旋伞齿轮rightangle直角AutomobileDifferential汽车差速器HelicalGear螺旋齿轮Worm蜗杆WormGear蜗轮skewshafts歪轴Rack齿条Significantfigure有效数字Leadingzeroes前导零Trappedzeroes中间零Trailingzeroes末尾零ExactNumbers确切数生词4（Statics&Dynamics）Statics静力学Dynamics动力学Mechanics力学rest静止Classicalmechanics经典力学Rigidbody刚体Mechanicsofrigidbodies刚体力学Mechanicsofdeformablebodies变形体力学Mechanicsoffluids流体力学Equilibrium平衡Newton’slawsofmotion牛顿运动定律Postulate假设Particle质点mass质量Uniformmotion匀速运动Externalforce外力Resultantforce合力Acceleration加速Proportional成比例Action作用Reaction反作用Mutualforce相互作用力Magnitude大小Collinear在同一直线上Quantity量Vector向量、矢量Scalar标量Momentum动量Referenceframe参考系Cartesiancoordinatesystem笛卡儿坐标系Unitvector单位矢量Subtraction减法Product乘积Innerproduct内积Vectorproduct向量积Resolve分解Component分量Rectangularcomponent直角分量Vectoralgebra矢量代数Polarforms极坐标形式AnIntroductiontoMechanicalEngineering–NewWords4Collection集合Neteffect净效应Vectorpolygon矢量多边形Trigonometry三角法Eyebolt吊环螺栓Moment力矩Righthandrule右手定则Wrench扳手Leverarm杆臂Pivotpoint支点Lineofaction作用线Adjustablewrench活动扳手Couples力偶Translation平移Equivalent等价的Aerodynamics空气动力Spaceshuttle航天飞机Freebodydiagram自由体受力图Sketch草图Lapandshoulderseatbelt腰肩部安全带Buckle带扣Anchor铰钉Strap皮带Resistance阻力Frictionalforce摩擦力Inhibit约束、制约Asperity粗糙面Distributedload分布载荷Frictionalcoefficient摩擦系数Kinetic动力的Impendingmotion临界运动Normalcontactforce法向接触力Kinematics运动学Displacement位移Kinetics动力学Inertial惯性的Degreeoffreedom自由度Centerofmass质心Momentofinertia转动惯量AnIntroductiontoMechanicalEngineering–NewWords5生词5（FluidMechanics）Fluidmechanics流体力学Viscosity粘度Newtonianfluid牛顿流体Velocitygradient速度梯度Fluidstrainrate流体的应变速度Coefficientofviscosity粘度系数Flowfield流场Nonviscous无粘性的Cohesiveforce内聚力Momentuminterchange动量交换Adhesion粘附力Convex凸的Concave凹的Mercury水银Viscous粘性的Fluidstatics流体静力学Manometer压力表Hydrauliclift液压升降机Hydraulicdrumbrake液压鼓式制动器Brakepedal刹车踏板Flowoffluid液体流Swirl漩涡Laminarflow层流Turbulentflow紊流Reynoldsnumber雷诺数Conservationlaw守恒定律Massflowrate质量流量Ambientfluid外围流体Exitvelocity出口速度Approachvelocity入口速度Aerodynamics空气动力学Thrust推力Airfoil翼剖面Tilt倾斜Angleofattack迎角Airstream气流Chord弦Curvature弧度Sonicboom音爆Impulsivenoise脉冲噪声Shipbow船首Shockwave冲击波Decibel分贝Soundbarrier音障Transonic接近音速的Wavedrag波浪阻力Stall失速Windtunnel风洞Ascentconfiguration上升姿态Upperatmosphere上层大气AnIntroductiontoMechanicalEngineering–NewWords6生词6（Materials）Atomicbond原子键Materialproperty材料特性Compositematerial复合材料Tailor定制Microstructure微观结构Metallicbond金属键Ionicbond离子键Donoratom施主原子Covalentbond共价键Hydrogenbond氢键Primarybond主价键Secondarybond副键Strength强度Tensiletest拉伸试验Ductile可延展的Low-carbonsteel低碳钢Structuralsteel结构钢Ductilematerial塑性物质Brittlematerial脆性物质Castiron铸铁Yieldstress屈服应力Proportionallimit比例极限Elasticlimit弹性极限Onset开始Ultimatestrength强度极限Ultimatetensilestrength极限抗拉强度Extensometer伸长计Gradient斜度Polymer聚合体Payload有效负载Servicetemperature工作温度Resisitivity电阻率Periodictable周期表Metalalloys金属合金Ferrousmetal黑色金属Non－ferrousmetal有色金属Mildsteel低碳钢Coldworking冷加工硬化Rust生锈Galvanizing电镀Alloysteel合金钢Heattreatm