grade increment

基本解释

A beneficiation plant has improved its flowsheet thus achieved good benefits in increment of concentrate grade & iron recovery rate and in decrement of tailing's grade.
介绍了某选矿厂通过选矿工艺流程技术改造，提高了精矿品位、回收率，降低尾矿品位，取得了较好的经济效益。
The highway is open to traffic the mileage and wills have the significant increment, the grade has the exaltation, will set up at a high speed the highway is the main National Freeway trunk line net .
公路通车里程将有大幅度的增加，等级有所提高，将建成以高速公路为主的国道干线网。