Oxidized wax modified by amidation reaction to produce acylamide with better physical and chemical properties.氧化蜡经过胺改性可以得到具有更佳物化性能的脂肪酸酰胺.A new leather fatliquor product was synthesized by amidation, esterification and ne...
Guscott rarely speaks out, preferring to keep his own counsel.古斯科特很少发表意见，他更喜欢把自己的看法埋在心里。She scorns the visible trappings of success, preferring to live unnoticed.她鄙视标志成功的外在之物, 更愿意默默无闻地生活.Douglas held his tongue, preferri...
The Roosevelt family produced two presidents: Theodore Roosevelt and Franklin Roosevelt.罗斯福家族出过两个总统: 西奥多·罗斯福和弗兰克林·罗斯福.The Referendum Examination Commission encroaches the presidents executive personnel.公民投票审议委员会的设计则有侵犯总统...