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一种草药制剂按下法制得:(1)将3～7份(重量)的抗菌挥发油溶于90％EtOH;(2)加入20～40份(重量)狭叶紫锥花Echinocea angustifolia和苍白紫锥花E.pallida的叶和根(1:1)制得的酊剂和20～40份紫色紫锥花E.purpurea叶和根的酊
An herbal preparation is prepared by: (1) dissolving 3 to 7 parts by weight of an antibacterial essential oil in 90% EtOH; (2) adding 20 to 40 parts by weight of echinocea angustifolia and pale purple E.pallida E.pallida leaves and roots (1:1) made of tinctures and 20 to 40 purple echinacea E.purpurea leaves and roots