英语语法分析

The yield of benzylidene acetophenone reached 31.4% under optimal conditions.

在最佳条件下，苄叉乙酰苯的收率可达31.4%。

A new method for the synthesis of benzylidene acetone with near critical water as reaction media was developed.

试探了一种以水为反应介质合成苯丁烯酮的新方法。

Absorption spectra of three novel coumarin sensitizer incorporate benzylidene cyclopentanone moiety were studied.

比较研究了三种含苄叉环戊酮基团的新型香豆素类光敏染料。