ore-drawing grade 出矿品位
drawing cutoff grade 放矿截止品位
cut off grade ore drawing 截止品位放矿
cutoff grade of ore drawing 截止放矿品位
extreme cut-off grade ore drawing 极限截止品位放矿
cut-off grade of ore drawing 放矿截止品位
We played a spelling and a drawing game. Grade 2.2 did a crossword puzzle.
我们做了拼写和绘画游戏，二年二班的同学还做了纵横拼字谜游戏。
It is concluded that location of foot-wall drawing points are closely related to orebody dip, cut-off grade and ore grade of wall rock.
认为下盘放矿点位置与矿体倾角、放矿截止品位、围岩含矿品位有着密切的关系。
When dilutionless drawing cann't be executed in one step, low dilution drawing can be used and the cut-off grade can be gradually raised towards dilutionless drawing.
当不能一步到位地施行无贫化放矿时，可用低贫化放矿，逐渐提高截止品位而趋向无贫化放矿。
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