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均苯四甲酸二酐
chem. 1,2,4,5-benzenetetracarboxylic acid dianhydride; pyromellitic dianhydride; pyromellitic acid dianhydride
均苯四酸二酐
chem. pyromellitic dianhydride
均苯四 酸二酐: 7 phrases in 5 subjects
Chemistry2
Oil / petroleum1
Plastics1
Polymers1
Technology2

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