In a multiple - step procedure, the extracted mucopolysaccharide is esterified to mucopolysaccharide polysulfate.经过一系列多步骤的程序, 萃取的粘多糖被酯化成多磺酸粘多糖(MPS).There were much high esterified pectin the, which caused cloudy and sedi...
人体蠕形螨是一类小型永久性专性寄生螨,可引起人体蠕形螨病.Human Demodex is a small permanent parasite which can cause human demodicidosis.目的了解山西青年学生蠕形螨的感染情况,研究蠕形螨及蠕形螨病的特性.Objective To study the follicle mite infection in young students of Shanxi.粉尘螨...
制备,保存用化学或物理方法制备 、 保存或润饰 ( 某物质 )To prepare , preserve, or finish ( a substance ) by a chemical or physical process.用化学或物理方法制备 、 保存或润饰 ( 某物质 ).To prepare, preserve, or finish ( a substance ) a chemical or physical process....
11月美国的贸易赤字扩大到75.9亿美元。The US trade deficit widened to $7.59 billion in November.1987年美国的贸易逆差创历史最高纪录,达到1520亿美元.The U.S. trade deficit hit a record $ 152 thousand - million that same year.主要位于布宜诺斯艾利斯,伦敦,巴黎,圣保罗,美国的威尔顿和孟菲斯.Ag...
他又食言了。He had again failed to keep his word.她从没食言过.She never draws back from what she promises.韦尔斯本应当出一半的钱，但后来他食言了。Wells was supposed to put up half the money, but later backed out....