英译汉-术语（每词1分，共16分）Ductility塑性（延展性）/compositematerials复合材料/silicon硅/ionicbond离子键/limestone石灰岩/coke焦炭//electronbeamwelding电子束焊/resistancespotwelding电阻点焊/weldnugget焊核/resistanceseamwelding电阻缝焊/vent通风口/drawingboard绘画板/tungsten钨/crystallization结晶/texture织构/hypoeutectoid亚共析/ceramic陶瓷/hermoplasticsgrain热塑/Cupola冲天炉/cementite渗碳体/fusionwelding熔化焊/gasmetalarcwelding熔化极气体保护焊/shieldinggas保护气/submergedarcwelding埋弧焊/diecasting压铸/runnerchannels浇铸/forming成形/pliers老虎钳/heattreatment热处理/quench淬火英译汉-句子（每题5分，共30分）1.Manyplastics,ceramics,waterandothermoleculesarepermanentlypolarized;thatis,someportionsofthemoleculetendtobepositivelycharged,whileotherportionsarenegativelycharged.多种塑料，陶瓷，水还有其他分子是永久极化的。就是说，分子的某部分倾向于带正电，而另外一部分带负电2.Thecarbonincastironispresentpartlyasfreegraphiteandpartlyasachemicalcombinationofironandcarbonwhichiscalledcementite.在铸铁中的碳部分作为自由的石墨存在，部分以渗碳体的铁和碳的化学混合物存在。3.Thisbecausethediffusionrateofsuchelementsisordersofmagnitudelowerthanthatofcarbonandalsobecausethoseelementshinderthediffusionofcarbon.这是因为这些元素的扩散速度比碳的扩散速度低几个数量级；还因为这些元素妨碍了碳的扩散。4.Thetendencyofthemetalchargetofreezeintherunnerloopbeforetheplungerbeginsitsadvancemightcreateproblemsinthecaseofsmallerdies.在更小的压铸模中，金属炉料在沖杆开始之前就在环形浇道中凝固的倾向可能会带来问题。5.Thesemethodsincludechangingtheorientationofmicroparticlesaswellastheirintroductionandremoval,suchasbydiffusion,thatis,rearranging,adding,orremovingparticles.这些方法包括改变微粒的取向以及通过扩散产生或消除这些微粒或者是重排，增加或减少微粒。6.Thepropertiesoftemperedsteelenableustouseitinthemanufactureoftoolswhichneedafairlyhardsteel.回火钢的特性是我们可能将其用于高硬工具的制造7.Theunitcellisasubdivisionofthelatticethatstillretainstheoverallcharacteristicsoftheentirelattice.晶胞就是保持整个空间点阵总体性质的最小单元。8.Amoretraditionalformofcastironwithreasonableductilityismalleableiron,whichisfirstcastaswhiteironandthenheattreatedtoproducenodulargraphiteprecipitates.更传统的具有适当韧性的铸铁是可锻铸铁。它先是被铸成白口铁，热处理形成小球状石墨沉淀。9.themostcommonproductiontechniqueusedtoproducethewireinvolvesfoldingathinmetalstripintoUshape,fillingitwiththefluxconstituents,closingtheUtof