Ore drawing mode的用法和樣例：
例句
- Taking Jingtieshan Mine as an example,the peper deals with several problems with applying non-dilution ore drawing mw thod.
以鏡鐵山礦為例研究了無(wú)貧化放礦方式在礦山應用的若干問(wèn)題。 - Research shows that main cause of ore dilution in sublevel caving mining is tlnrational cut-off grade drawing.Non-dilution ore drawing is most ideal drawing mede.
研究表明，造成無(wú)底柱分段崩落法來(lái)出礦石貧比大的根本原因在于采用了不合理的截止品位放礦方式，無(wú)貧化放礦是無(wú)底柱分段崩落法最為理想的放礦方式。
