Amphoteric monomer is prepared with acrylic acid , dimethylamine and chloroethanol by Mannich reaction.以丙烯酸、二甲胺、环氧氯丙烷为原料,通过曼尼希反应制得两性离子单体.Biological activities of amphoteric surfactants to higher or lower organisms were i...
Reactions in liquid HF are known that illustrate also amphoteric behavior, solvolysis, or complex formation.已知在液态HF中,也能说明两性行为溶剂分解或络合物形成作用的反应.Biological activities of amphoteric surfactants to higher or lower organisms we...
在早晨天空的映照下,那些松树呈黑色.The pine trees were black against the morning sky.教堂的尖塔在天空的映衬下宛如指向天空的手指.The church tower stood against the sky like a finger pointing towards heaven.探照灯和焰火使得天空的颜色千变万化.The search lights and the fireworks...
She remembered that she was going to the social club that evening.她记起来那晚她正要去社交俱乐部。Then I remembered the cheque, which cheered me up.然后我想起了那张支票，这让我精神大振。John will be best remembered for his drive and enthusiasm.约翰的魄力和热情最令人...
Hatter opened his glassy eyes.哈特张开了眼睛,目光呆滞.The hatter shook his head mournfully.帽匠悲哀地摇摇头.Hello! May I speak to Harry Hatter , please?你好! 我可以跟哈里哈特讲话 吗 ?...
我行在此向汇票的出票人,背书人及合法持有人表示同意.We hereby agree with the drawers , endorsers and bona fide holders of drafts.接着,出票人把汇票送交银行.The drawer then gives the Bill of Exchange to the bank.出票人签署支票的账户持有人.Drawer The account holder or the p...
Carrie turned slowly away, and seemed to be mastering some impulse in silence.嘉莉慢慢转过身去, 好像在暗中竭力克制某种冲动.Compassion is a prerequisite to mastering the upper initiations of the Bodhisattva.同情是掌握菩萨较高提升阶段的先诀条件.After mastering ...