A series of Copolyimides, derived from hexamethylene diamine ( HMD ) , 4,4� � - diaminodiphenyl ether ( ODA ) and 3,3� �, 4,4� � - oxydiphthalic dianhydride ( ODPA ), were prepared.采用二苯醚3,3, ′4, 4′-四 甲酸 二酐与己二胺和4, 4′-二氨基二...
2026年06月29日
spoil的近义词/同义词有:damage, botch, impair, destroy, injure, decay, upset, mar, rot, ruin, rot, damage, smear, botch, butcher, upset, murder, decay, destroy, deform, pamper, addle, hurt, injure, impair, cater, mar, thwart, cod...
2026年06月29日