low grade ore的意思|示意

贪矿石 ... 炭质的：carbonaceous 贪矿石：low grade ore 坍落试验：slump test ...

贫矿 ... minimum economic ore grade 最低工业品位 low grade ore 贫矿 ; 低品位矿 ; 低品位矿石 High-grade Ore 富矿 ...

低级矿 ... low forest 矮林 low grade ore 低级矿 low ground 低地 ...

低品位矿 ... low frequency 低频 low grade ore 低品位矿 low intensity test reactor 低中子通量密度试验性回响堆 ...