专业英语复习提纲

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1、solder焊料annealing退火pulley皮带轮critical临界点squarekey方键washer垫片rear-wheel后轮millingmachines铳床planing刨削centerlessgrinder无心磨床internalgrinder内圆磨床cold-workingoperations冷作加工chip切屑trail踪迹meltingpoint熔点grinding磨削加工modulussofelasticity弹性模量lowcarbonsteel低碳钢high-speedsteel高速钢helicalgear斜齿轮wormgea

2、r蜗轮right-handthreads右手螺旋thetransmission变速箱bearings轴承gears齿轮mesh啮合worm蜗杆rear-wheel后轮spurgear直齿轮lubricant润滑剂lead导程connecting・rod连杆Metal金属ferrousmetal黑色金属strength强度corrode腐蚀compressionmoulding压型法foundry铸造copper-basealloys铜基合金dropforging落锤锻phrometer高温计electrode电极cam凸轮pulley带轮cantileve

3、r悬臂taperedkey锥形键nut螺母stud螺栓thetransmission变速箱turning车削surfacegrinder平面磨床externalgrinder外圆磨床mould模具automaticmachinting自动加工stroke冲程roughingoperation粗加工finishingoperation精加工solder焊接quench淬火machining切削加工rigidly刚性friction摩擦lubricate润滑thread螺纹twistdrills麻花钻toleranee公差inertia惯性linkage连杆s

4、pindlebox主轴箱toolapron刀座flankwear后刀面磨损craterwear前刀面磨损sliding-contactbearings滑动轴承rolling-contactbearings滚动轴承couplings联轴器kineticenergy动能hinge较链tailstock尾架boring镇削swarf金属屑limits极限尺寸userinterface用户接口jack千斤顶upperandlowerlimits上下极限knowledgeengineer知识工程师Torgue扭矩Manipulator控制器Hardautomatio

5、n刚性自动化Binary二进制的Randomaccessmemory读写存储器Programmaglecontrollers可编程控制器Flexiblemanufacturingsystems柔性制造系统Computernumericalcontrol计算机数控Knowledgebases知识库1•塑料的优缺点：Plasticstendtoberesistanttotheseacids,butcanbedissolvedordeformedbysolvents,Mostplasticsarelessrigidthanmetals,whileplastics

6、areverylight.Mostplasticsdonotreadilyconductheatorelectricityreadily.Plasticssoftenslowlyandcaneasilybeshapedwhiletheyaresoft.2•带传动为什么没有精确的传动比？SmoothflatbeltsandVbeltsdependonfrictiononthepulleysandsomeslippageisinherentintheiroperation.Therefore,speedratiosarenotprecise.3•热处理工艺类型

7、：Thetypesofheattreatment:Annealing(退火):heatthesteelaboveacertaincriticaltemperatureandcoolitveryslowly.(itcausethemetaltobecomemoresofterthanbeforeandmucheasiertomachine)Quench(淬火):heatthemetaltoatemperatureabovethecriticaltemperatureandcoolitveryquickly.Tempering(回火)：Afterquenchi

8、ng,themetalisheatedagaintoatemper