短語詞組短語ore e grade 礦石品級ore removal grade 出窿品位ore -grade precipitate 礦石級沉淀物Unleachable ore -grade 難浸礦品位ore feed grade 入選品位ore operating grade 礦石作業(yè)品位ore slurry grade 礦漿品位iron ore slurry grade 鐵礦漿品位mining ore grade 采礦等級 返回 ore grade