The essay probes into the relation between the unsaturation and the functional group as well as the influence of the functional group on the organic compound.
前言： 本文探讨了不饱和度与官能团关系以及官能团对有机化合物合成的影响。
2
So anti-reality compound sentence can reveal cause and effect relation among sentences, demonstrate certain proposition and indicate speaker's objective attitude and emotion.
据此，反事实假设复句可以揭示事物间的因果联系、论证某个命题和表明说话者的主观态度和情感。
3
In addition compound 1 was acetylated, then a kind of all acetylated derivative was obtained. It was important for the study on the relation of structure-activity.