他们都遵守着那条约束他们所有人的默认规则——要守口如瓶。They obey the one unwritten rule that binds them all—no talking.这条规定赋予了总统绝对及不受约束的权力。This provision gives the president total and unchecked power.自己在家锻炼需要很强的自我约束能力。Exercising at home alone requ...
This is a generally known method for obtaining phenylnitromethane from benzyl cyanide.从苯乙腈制取苯基硝基甲烷就用这个方法.A new route for preparation and hydrolyzation of octa - O - benzyl sucrose was described in this paper.研究了八苄基蔗糖制备的新...
Methods: The technique of serum free cultivation and the methods of immunofluorescence cytochemistry were used.方法利用无血清培养技术和细胞免疫化学方法.Methods Single and double staining immunofluorescence techniques were used.方法采用免疫荧光单标记法和...