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於稀盐酸里滴入青霉素溶液,即生白色固形或乳状沉淀,链霉素则否。於酒精里(90%以上者)滴入链霉素溶液,即
In dilute hydrochloric acid instillation penicillin solution, that is, white solid or milky precipitate, streptomycin is not. In alcohol (more than 90%) instillation of streptomycin solution, that is