The solid phase polymerization equipment needs high quality nitrogen, and the work conditions for the purified system equipment of nitrogen is acrimonious. The structure design and the manufacture process of nitrogen heat changer are also introduced.是什么意思_The solid phase polymerization equipment needs high quality nitrogen, and the work conditions for the purified system equipment of nitrogen is acrimonious. The structure design and the manufacture process of nitrogen heat changer are also introduced.在线翻译_英语_读音_用法_例句