The concentration-time reaction for both final and intermediate products, and the effects of reaction parameters on degree of conversion and quantum yield are calculated.
给出终态产物和中间产物的时间演化以及各种参数对转变率及量子产率的影响。
Lactide is the intermediate for preparing of polylactic acid from lactic acid. The yield of lactide is the key factor to influence the extensive production and low the cost of polylactic acid.
丙交酯是以乳酸为原料制备高分子量聚乳酸的中间体，因此丙交酯的收率是影响聚乳酸大规模生产及其生产成本的关键因素。
The first and most recent development is the steepening of the U. S. Treasury yield curve and the rise of intermediate and long-term bond yields.
第一种方法，同时也是最近发展趋势，是让美国国债的收益率曲线变陡，提高中期以及长期债券的收益率。
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