英语语法分析

Using the difference of the hydrolysis speed in the water between meso-lactide and other lactides, high pure L-lactide was obtained by water washing-four times recrystallization.

利用内消旋丙交酯在水中水解的速度大于其它丙交酯的特点，用水洗和四次重结晶相结合的提纯方法，获得了高纯的L-丙交酯。