With LPI 1, LPG yield has been increased by over 2.31 percent points, propene yield by over 1.51 percent point and the selectivity for increasing propene yield is over 59%.是什么意思_With LPI 1, LPG yield has been increased by over 2.31 percent points, propene yield by over 1.51 percent point and the selectivity for increasing propene yield is over 59%.在线翻译_英语_读音_用法_例句