学科分类
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3 个结果
  • 简介:Ingeneral,theearlieststatesandcivilizationsofWesternAsiaandNorthAfricarespectivelyfirstcameintoexistenceattheendofthefourthmillenniumB.C.1Despitethefactthatthesetwoareasdevelopedindifferentdirectionsduringaperiodofabout3000years,therewasthensometypeofcontactbetweenAncientWestern

  • 标签: 托勒密 共存关系 埃及 西亚地区 亚历山大 古希腊
  • 简介:Thisnew,recentlydevelopedextractingtechniqne,SupercriticalFluidExtraction(SFE),featuresmanyadvantagesinnaturalproductextraction,suchasasatisfactoryrateofextraction,ahighisolationeffect,and,whenoperatedentirelyfreeofresidualsolvents,lowcost.

  • 标签: 中国 西藏 传统药学 超临界流体萃取 二氧化碳