ben·e·fi·ci·a·tion /ˌbɛnəˌfɪʃiˈeʃən/
  富集; 選礦
  Ben·e·fi·ci·ate v. t.  Mining To reduce (ores). -- Ben*e*fi*ci*a*tion (░), n.
  ◄ ►
  beneficiation
       n : crushing and separating ore into valuable substances or
           waste by any of a variety of techniques [syn: mineral
           extraction, mineral processing, mineral dressing, ore
           processing, ore dressing]