The preparation of sulfate heptahydrate and copper sulfate pentahydrate from calcined zincblende was investigated.用经高温煅烧后的闪锌矿石与稀硫酸反应制备七水硫酸锌和五水硫酸铜.Modified polymerized sulphate flocculating agent was made with ferrous sul...
The 40-year-old singer reformed his band.这个40岁的歌手重组了他的乐队。The great majority of criminals can also be reformed.绝大多数罪犯也是可以改造的.I flatly refused to be " reformed " .我干脆就不受这个 感化....