Natural gas liquification involves both mixed - refrigerant cycle and nitrogen expander cycle.近几年国内天然气液化技术主要采用混合工质液化循环和氮膨胀液化循环.The Catalyst that is suitable for Shenhua coal liquification was found out through experiment...

液化...

liquification的音标：liquification的英式发音音标为：[lɪkwɪfɪ'keɪʃn]liquification的美式发音音标为：[lɪkwɪfɪ'keɪʃn]...