首页>
外国专利>
IMPROVEMENTS IN OR RELATING TO ELECTRICALLY OPERATED TUMBLING GRINDING MILLS,SUCH AS FOR EXAMPLE,ROTARY TUBE MILLS USING A COARSE COMPONENT OF THE ORE AS THE GRINDING MEDIUM
IMPROVEMENTS IN OR RELATING TO ELECTRICALLY OPERATED TUMBLING GRINDING MILLS,SUCH AS FOR EXAMPLE,ROTARY TUBE MILLS USING A COARSE COMPONENT OF THE ORE AS THE GRINDING MEDIUM