the vogue for child-centred education以孩子为中心的教育潮流The fighting has been centred around the town of Vucovar.战斗主要集中在武科瓦尔镇周围。The map will be redrawn centred on the position of Betelgeuse.地图将以参宿四为中心重绘.Given such incentives, ca...
大量碳氢化合物如苯并芘也是诱变剂.A large number of hydrocarbons such as benzopyrene are also mutagenic.建立了粮食中苯并芘残留的高效液相色谱测定法.This thesis developed a HPLC method for determination of benzo a pyrene in grain.建立了肉类食品中苯并芘残留的高效液相色谱测定法.This t...