亚胺基杂环丙烷季铵盐的阳离子,一定是按协同反应的方式开环的.The aziridinium ions must all be opened by a concerted process.阳离子表面活性剂通常为季铵盐类.Cationics are usually quaternary ammomium salts.反 离子通常是钠, 钾和铵.The usual counter - ions are sodium, potassium an...
The 82.5 % of patients with acquired SOP were accompanied with diplopia.5%后天性sop者有明显自觉复视.To determine the factors causing diplopia and ptosis after cataract extraction.目的:探讨白内障术后复视及上睑下垂的机制.After subtotal thyroidectomy, h...
Man-made and natural disasters have disrupted the Government's economic plans.天灾人祸打乱了政府的经济计划。Speakers have been shouted down, classes disrupted, teachers made to grovel.发言人的声音被叫嚷声盖住了，课堂一片混乱，老师们不得不好言相劝。Antimetabolite...
Chitin synthase is the important enzyme that converts UDP - GlcNAc to chitin.摘要几丁质合成酶是生物合成几丁质的关键物质.Chitin, chitosan are recycling natural polymers with abundant and excellent properties.甲壳素 、 壳聚糖是可再生的天然高分子化合物,来源丰富、性质优良.C...