聚丙烯 PP红外谱图470.37723.29841.09973.69993.871163.631375.721459.692717.662845.592914.732959.03 0 1 2 3 4 5 6 7%T 2000 4000 Wavenum bers (cm-1)

时间:2025-01-02 12:27栏目:行业资料