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4,4'一六氟亚异丙基二邻苯二甲酸酐
polym.
4,4'-
hexafluoroisopropylidine
diphthalic anhydride
(6FDA)
4'一六氟亚异丙基二邻苯二甲酸酐
polym.
4,4'-
hexafluoroisopropylidine
-diphthalic anhydride
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