简介:美是什么?不同的人有不同的理解。事物,本来就不是唯一的.它具有多面性不同的角度会有不同的观点。就以“美”字而言,汉语字典中则是这样追本求源的:金文字形,从羊,从大.古人以羊为主要副食品,肥牡的羊吃起来味很美,故而有了“美”字”,这是唯物的、考证的结果.可能与我们常说的“美”字不太同了,
简介:CambodiaKiriro1stCascadeHydropowerStationisthefirstoverseasBOTprojectoftheStatePowerCorporation(SP).ItisareconstructionprojectwhichiscontractedbyChinaPowerTechnologyImport&ExportCompany(CPTIEC).OnDecember9,2000,theagreementonseller’sexportcreditloanconcernin
简介:BymeansofthetheoryofharmonicmapsintotheunitarygroupU(N),theauthorsstudyharmonicmapsintothesymplecticgroupSp(N).Thesymplecticunitonandsymplecticex-tendedunitonareintroduced.ThemethodofthesymplecticBacklundtransformationandtheDarbouxtransformationisusedtoconstructnewsymplecticunitonsfromaknownone.