短語詞組短語modified poly propylene carbonate 改性聚碳酸亞丙酯poly propylene carbonate polyols 聚碳酸亞丙酯多元醇Propylene carbonate PC 碳酸丙烯酯cooling of propylene carbonate 丙碳冷卻Propylene carbonate pump 碳丙泵mixed solvent of propylene carbonate 碳酸丙烯酯複郃溶劑Propylene carbonate solvent for decarbonation 丙碳脫碳溶劑methanol -propylene carbonate azeotrope 甲醇 返回 propylene carbonate