ore withdrawal的用法和樣例：
例句
- Based on the technical and economical index, an optimal decision for the cutoff grade of ore drawing is presented.
在獲取礦石技術(shù)經(jīng)濟指標的基礎上，對截止放礦品位進(jìn)行了優(yōu)選政策。 - 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。
