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1、时光荏苒，岁月如白驹过隙，不经意间，我们即将从多彩的大学毕业，完成一个从大学生到社会人的转变。四年的大学生涯，让我明白了许许多多的科学知识和人生哲理，以及数不尽的感悟和成长。然只有将所学的理论知识付诸于社会的实践，才能检验和实现理论自身的价值，也只有将理论付诸于实践才能使理论得以检验。同样，一个人的价值也是通过实践活动来实现的，也只有通过实践才能锻炼人的品质，彰显人的时代风貌。而毕业实习作为大学的最后一课，也是最后一刻，我倍加珍惜，从而可以较深层次的理解社会，以便为将来能更好的胜任工作打下坚实的基础。外文资料翻译HISTORYOFUN
2、DERWATERWELDINGTECHNOLOGYUnderwaterweldingtechnologyisthedevelopmentofthemarine,offshoreoilexploitationaswellasassembly,maintenancesuchasoilplatforms,pipelinesandsubmarinepositionsinlargemarinestructuressuchasoneofthekeytechnologies,butalsoshipsemergencyrepair,salvage,c
3、onstructionofbridgesandothernecessarytechnicallyworkmeans.Nuclearpowerdevelopmentisthetrendoftheworldinnuclearpowerplantswithinthereactorpressurevessel(RPV)forlong-termworkinthewater,susceptibletostresscorrosioncrackingofthedamage,structuralrepairofnuclearpower,willface
4、manychallenges.Tooftenuseradiation-relatedunderwaterweldingmethod,inordertoreducetheworkingstaff.Classificationofunderwaterweldingunderwaterweldinggenerallydividedintothreecategories:wet,dry,andlocaldry.Andthedrycanbedividedintohigh-pressuredryunderwaterweldingandcommon
5、-pressureunderwaterweldingpressure.Locallaws,includingdrainagecoverdrytype,high-pressurecurtain-style,steelbrush,mobileairboxandplasmaarcMIGlocaldrymethod.Weldingmethodusedgenerallycoatedelectrodewelding,GTAW,GMWA,andFCAW.Inadditiontoweldingunderwaterweldinginadditionth
6、ereisanexplosionweldingandFSW(frictionstitchweldingfrictionstitchwelding),thesetwomethodsareallconnectedbysolidphasetechnology.Followingthedevelopmentofunderwaterweldingcourse:1UnderwaterwetweldingtechnologyIn1802,ascholarnamedHumphreypointedoutthatacontinuousarccanburn
7、underwater,thatpointedoutthepossibilityofunderwaterwelding,butitspracticalapplicationismorethan100yearslater,cannotmovethestructureonlandweldingwasdoneunderthecircumstances.Thefirstpublishedanarticleaboutunderwaterweldingresearchpapersin1933,wasjointlybyHibshrmanJensena
8、ndcomplete.1932,Khrenovinventedthethickskinofunderwatermedicinespecialelectrode,theelectrodesurfacetopcoatwith
