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介绍一种既可适用于没食子酸脱羧兼气化生产焦性没食子酸,又能适用于其它各种化工产品升华凝华的新型升华凝华机。
A new type of sublimation and desublimation machine which can be applied to the production of pyrogallic acid by the gallic acid decarboxylation and gasification and the sublimation and desublimation of various other chemical products is introduced.