简介：It'salluspleasuretocometoChina,agreatdealofcheerfultimesalready.Ihopethatwehaveadditionalopportunitytomeet,talkaboutcryptographyandothercomponents.TodayIamgoingtogiveageneraltalkwhichisnotdesignedforspeciallists,abouthowcouldthesystemsget

简介：别说我的英语水平差，这句绝对规范的Chinglish用来配合这个选题是再合适不过的了，这篇就是想“给你几个土豪看看”！

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简介：AtpresentmanyCADsoftwareproductsdidnotfullymeettherequirementsofNationalStandard《TechnicaldraftingandMechanicalDrawing》thatgreatlyaffectsthequalityandspeedofengineeringdesign.Takingcomputer-aideddesignoftypicalmechanicalpartsasanexample,thispaperproposesanapproachtodevelopcorrespondingfunctionsinCADsoftwaretoenhancethestandardizationofengineeringdesign.