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。

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The main limited factor of increasing yield was fruit rate too low.

结实率低是限制该品种发挥增产潜力的主要限制因素。

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Also, the average yield of DAX stocks is 3.5%, almost three times the yield on the 10-year German government benchmark bond, a factor that could persuade yield-hungry investors deterred by low returns on government bonds to switch from debt to equity.

WSJ: DAX Hits New High