For simple chest infections most of the chemists sold innocuous cough mixtures, lozenges or decongestants.
BBC: Holidaymakers 'get wrong medicines'
Fracking uses high-pressure mixtures of water, sand or gravel and chemicals to crack rock formations and release oil and natural gas deep underground.
NPR: Scenic, Struggling S. Illinois Braces For Oil Rush
Chromatography is a process used by scientists to separate complex chemical mixtures at the "nano, " or molecular, level by virtue of differences in absorbency.
FORBES: Investment Gurus Dump Banks, Buy Comfy Duds
应用推荐
模块上移
模块下移
不移动