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提问人:网友w624455z
发布时间:2022-01-06
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27 填空Before vulcanization, the interaction of polymers chains is mainly (范德华力), afte
27 填空Before vulcanization, the interaction of polymers chains is mainly (范德华力), after the addition of sulfer, the interaction change into to (共价键), and the natural rubber changed from (热塑性高分子)to (热固性高分子) (依次填写,单词之间以空格分开即可)
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