At the beginning of the reaction, the supported HPW catalyst showed a very high activity, the conversion of butene was up to 100% and most of the products were isoparaffins.是什么意思_At the beginning of the reaction, the supported HPW catalyst showed a very high activity, the conversion of butene was up to 100% and most of the products were isoparaffins.在线翻译_英语_读音_用法_例句