This article introduced a method for preparing α - chloro - isobutylaldehyde , in order to explore a practical chloration of oxo - compound. 本文介绍了制备氯代异丁醛的方法, 其目的在于探索羰基化合物的一种实用的氯代方法.
Her blouse has a ruffle of lace around the neck.她的衬衫领子镶有褶裥花边。Carman Kass looked girlie in a black ruffle chiffon dress.身着黑色褶边薄纱裙的卡门?卡斯看起来仿若少女.Tame birds, when approached, will stretch out their necks and ruffle their nec...