利用溶剂吸收采集丁酮甲苯混合组分,并用气相色谱 ( GC ) 测定.Absorbed by solvent, butanone - toluene mixture was analyzed by gas chromatography ( GC ).研究工作场所环境空气中二甲基甲酰胺、十一烷和丁酮混合物一次吸附、一次分离的定量分析方法.Objective To estabish a method of AES for determiana...
打电话时须留下全名与联络信息。You must leave your full name and contact details when you phone.请问您的全名是什么？May I have your full name?汤姆晓得老师要是叫他全名, 那麻烦事就来了.Tom knew that when his name was pronounced in full , it meant trouble....
Here the Nile broadens out between the huge granite boulders.尼罗河在此处变宽，从两块花岗岩巨石间穿过。Explorers traced the Nile River to its several headstreams in Central Africa.探险者在中非找到了尼罗河的几处源头.Where is the source of the Nile?尼罗河发源于何处?...