To mutate breeding with Penicillium chrysogenum in existing production in order to obtain stable high yield strain.

对现有生产中的产黄青霉进行育种突变，以获得稳定的高产菌株。

The chiral HMPA analogues were prepared in high yield by nucleophilic substitution between the chiral secondary amine and phosphoryl chloride.

通过磷酰氯与手性仲胺的亲核取代反应高产率地合成了手性 HMPA 类似物。

The knoevenagel condensation of aromatic aldehydes with ethyl cyanoacetate proceeds smoothly in the presence of potassium fluoride giving products in high yield.

在氟化钾催化下， 芳香醛与氰乙酸乙酯发生克脑文格尔缩合反应，得到高产率的缩合产物。

Technology must go into villages and peasant households for high yield and high efficiency.

全面推进科技进村入户，推广增产增效技术。