英汉词典

1.We have made a progress on the basis of the bioactivities and mimic biosynthesis of naturally occurring oligostilbenes, as well as the natural stilbene derivatives.

本论文对天然低聚茋类化合物的生物活性与仿生合成，以及天然茋类衍生物的研究进展进行了综述。 对两种买麻藤属植物的化学成分进行了研究。

2.Addition of n-Bu_4NBF_4 accelerated the isomerization of cis-stilbene dramatically but retarded the reaction of quadrieyolane.

加入四正丁基四氟硼酸铵明显加快顺式芪的异构反应而减慢四环烷的反应。

3.Methods: (1) to separate stilbene glycoside by using silica gel column chromatography with gradient elution consisting of ethyl acetate and petroleum ether.

方法：硅胶柱色谱法，乙酸乙酯-石油醚梯度洗脱，自何首乌中提取分离二苯乙烯苷单体成分。

4.The product concentration was 70.34% determined by HPLC, and the yield of the Stilbene Glucoside was 64.13%.

纯化后的产物经高效液相色谱分析，二苯乙烯苷含量达到70.34%，得率为64.13%。

5.The problem of photophysics, spectrum and photo isomerization of bis(benzoxadyl) stilbene in different solvents were studied carefully.

对双（苯并唑）化合物在不同极性溶剂中的光谱、光物理及光顺反异构化问题进行了详细研究。

6.Stilbene glycoside; Vascular dementia; Behavioral; Free radical metabolism.

二苯乙烯苷；血管性痴呆；行为学；自由基代谢。

7.In the case of trans-stilbene the results were opposite.

而反式二苯乙烯为添加剂时结果正好相反。

8.Objective To investigate the distribution of anthraquinones and stilbene in different organs and tissues of Polygonum multiflorum Thunb.

不同营养器官和组织中蒽醌类和茋类化合物的分布，为合理利用何首乌提供科学依据。

9.Methods: (1)To separate stilbene glycoside by using silica gel column chromatography with gradient elution consisting of ethyl acetate and petroleum ether.

方法：（1）以硅胶柱色谱法，乙酸乙酯-石油醚梯度洗脱，自何首乌中提取分离二苯乙烯苷单体成分。