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...
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...
All patients were treated with anterior interbody fusion and internal fixation.所有患者为前路植骨融合加内固定术.Objective To evaluate the effects of allograft fusion cage ( AFC ) on anterior cervical interbody fusion.目的了解同种异体骨圈 ( allogr...
I let the horse drop his head to crop the spring grass.我让马低下头啃吃春天的青草。If unused, winter radishes run to seed in spring.如果不去动的话，冬萝卜会在春天开花结籽。In the spring, the meadow is a mass of daffodils.春天，草地上开满了黄水仙。...