英语语法分析

Preparation technique was ameliorated in order to improve purity and yield of L-lactide.

为提高L -丙交酯的纯度和产率，对l -丙交酯的制备技术进行改进。

Polylactic acid synthesis in two major ways:direct polymerization and lactate lactide ring-opening polymerization.

聚乳酸的合成方法主要有两种：乳酸直接聚合和丙交酯开环聚合。

This technology can not only reduce the cost of producing lactide , but also solve the pollution problems from kitchen garbage.

本工艺不但可降低丙交酯的生产成本，而且解决了厨房垃圾的环境污染问题。