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The transformation and production rearrangement of the crude benzol distillation system are described.介紹了粗苯蒸餾系統(tǒng)的改造和生產(chǎn)調(diào)整情況.METHOD: Using Chapman rearrangement to prepare 2, 6? dichloro? diphenylamine.方法: 應(yīng)用 Chapman 重排制備2,...