目的: 合成新的双-胡椒醛缩二胺类席夫碱化合物.Methods: Five Schiff bases were prepared from piperonal and diamines by condensation reaction.用胡椒醛为起始原料,经氯化 、 水解、缩合,制得血凝酸胺.After the process of chlorination, hydrolytic decomposition and condensat...
桨的根部使用了高强度塑料夹片, 增加了可靠性和安全性.The grip of the blade is made of high - strength plastic, which improve the reliability and safety.其索具由球头索杯 、 夹片及其O型圈构成.The rigging consists of a ball head line cup, a clamping piece and an O r...
The schools produced diligent excerpting from older manuscripts, summarizing, and commentaries.各学院从古代手稿里作了辛勤的摘录 、 总结和评注工作.The schools produced diligent excepting from older manuscripts, summarizing, and commentaries.各学院从...
He can dull your senses with facts and figures.他会用事实和数据蒙蔽你的理智。May her death bring these people to their senses.但愿她的死能让这些人醒悟。You sold it? You must be out of your senses!你把它卖了? 你简直是疯了!...