They are acrylaldehyde hydration, ethylene oxide formylation and biological zymolysis methods.即丙烯醛水合法, 环氧乙烷甲酰化法,生物发酵法.Secondly, take p - nitrophenol as the raw material, studing the effect of Duff formylation reaction.其次...
The cordless kettle may now be a fixture in most kitchens.无绳电热水壶现在可能是多数厨房的固定设备。A cordless telephone has been installed in the house.这房子里已安装了一部无绳电话.The waitress approached Picone with a cordless phone.女服务员拿着无绳电话向皮科内走来。......