这一组中包括黄酮类化合物, 二苯甲酮 、 一些香豆素 、 木质素 、 缩合单宁和芪.The group includes flavonoids, benzophenones, some coumarins, lignans, condensed tannins, and stilbenes.木质素是次生壁成份的特征.Lignin is a characteristic component of secondary walls.橡木酒桶神...
The children who were spoon-fed consumerism have discovered that the years of excess are over.曾被填鸭式地灌输了消费主义思想的孩子们发现无节制的时代已经结束了。There are fads in science just as there are fads in dress, speech, and consumerism.科学研究与衣着, 言...