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构成矿石的条件是必须含有一定数量的一种或几种有益组分,只有达到某一含量(品位)时,在现今的经济和技术条件下,对它进行开采和加工才有盈利. 因此,储量计算应有一定的标准,以便计算时把合乎要求的(表内)储量和暂时不符合要求的(表外)储量,以及根本不能为工业利用的含
The conditions for the formation of ores are that they must contain a certain amount of one or more beneficial components, which are not profitable under current economic and technological conditions until they reach a certain level (grade) The calculation of reserves should have some standard in order to calculate the level of reserves (off-balance-sheet) and off-list (off-balance-sheet) reserves that are required in the calculation and those not readily available for industrial use