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用“PTMG”造句大全，PTMG造句

用“PTMG”造句大全，PTMG造句

2024-02-10
1、StudyonMechanicalPropertiesofMDI/PTMGTypePolyurethaneElastomer2、Polyoxytertramethylene(PTMG)issynthetizedinonestepusingheteropolyacidascatalyst.WediscussedthefactorswhichinfluencedtheyieldofPTMG.3...