求大神帮忙
有没有大神帮我做一下醋酸丁酸纤维素工艺流程的aspen要求有活化和酯化file:///C:/Documents%20and%20Settings/Administrator/Application%20Data/Tencent/QQ/Temp/820F99AE0B22418B87D7B61EAF9FE30B.giffile:///C:/Documents%20and%20Settings/Administrator/Application%20Data/Tencent/QQ/Temp/820F99AE0B22418B87D7B61EAF9FE30B.gif工段以纤维素为原料的。谢谢了。新人没啥家底，就先谢谢了。
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