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...
a study of European drama, from Ibsen to the present day从易卜生到现代欧洲戏剧的研究These time-worn techniques are often very effective approaches to the illnesses of the present day.这些古老的疗法在治疗当今的疾病时往往非常有效。The lecture will trace the d...