![PTMG造句怎么写]( "PTMG造句怎么写")
- 1、StudyonMechanicalPropertiesofMDI/PTMGTypePolyurethaneElastomer2、Polyoxytertramethylene(PTMG)issynthetizedinonestepusingheteropolyacidascatalyst.WediscussedthefactorswhichinfluencedtheyieldofPTMG.3、StudyonPreparationandProperiesofaNewPTMG-POCopol...
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