英语语法分析

Direct acetylacetone colorimetric method was used.

选用乙酰丙酮比色法直接测定。

Color reaction with acetylacetone is used to determine the formaldehyde content in fabrics.

织物中甲醛的测定大多采用乙酰丙酮的显色反应。

Based on the application and study situation, problems of synthesis process of acetylacetone and its development were studied.

针对乙酰丙酮的应用前景和研究现状，研究了目前乙酰丙酮合成工艺中存在的问题和发展趋势。