英语语法分析

Finally, the developing trend of etherification catalysts is emphasized.

最后指出了醚化催化剂的发展趋势。

Effects of methanol on the properties and catalytic activity of resin etherification catalysts were studied.

探讨了甲醇对酸性树脂催化剂物化性能和催化性能的影响。

Moreover, their activity and selectivity in etherification reaction is simultaneously estimated and compared.

此外，对这几种催化剂的醚化活性、选择性进行了评价。