从苯乙腈制取苯基硝基甲烷就用这个方法.This is a generally known method for obtaining phenylnitromethane from benzyl cyanide.设计了一套回收制药废液中乙腈的新工艺.A novel process of acetonitrile recovery from pharmaceutical effluent was designed.有机氰化物, 如乙腈 、 ...
These strands of molecules twine around each other to form cable-like structures.这些分子链彼此缠绕，形成缆线状的结构。There are wide variations caused by different academic programme structures.不同的教学项目结构造成了巨大的差异。Family structures are weak...
下降的部分原因在于英镑对美元的升值。The drop was caused partly by the pound's strength against the dollar.我决定把这张照片水印以下的部分裁掉。I decided to crop the picture just above the water line.该公司租下了这栋大楼，占用了一部分并转租了其余的部分。The company rented the bui...