(n.) An apparatus for the separation of dry comminuted
ore, by exposing it to intermittent puffs of air.
编辑:摩尔
双语例句
In the treatment of iron ores, and especially those of low grade, the magnetic concentrator is an interesting and striking departure. Edward W. Byrn.十九世纪发明进展.
In mining there are stamp mills, ore crushers, separators, concentrators, and amalgamators. Edward W. Byrn.十九世纪发明进展.
These are known by various names, as jiggers, rifflers, concentrators, washing frames, etc. 威廉·亨利·杜利特.世纪发明.