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...
He stormed out of the apartment, slamming the door furiously behind him.他怒不可遏地把门猛地一摔，冲出了公寓。The noise of a door slamming wakened her.砰的摔门声把她吵醒了。I heard a door slamming.我听到门砰地关上了。...
The washbasin had a small chip.脸盆边上有个小豁口。I've just made some chocolate-chip cookies.我刚做了些巧克力甜饼。We worked on and on, with Buzz writing it all into the memory chip.我们不停地忙碌着, 巴兹把我想知道的一切写到内存芯片里面.This company pioneered t...