Diamond concentration, commonly referred to as con, is a measure of the amount of diamond contained in a segment based upon volume.
金刚石浓度，就以行骗、是量度钻石所载金额部分是以量。
Diamond concentration, commonly referred to as con, is a measure of the amount of diamond contained in a segment based upon volume.
金刚石浓度，就以行骗、是量度钻石所载金额部分是以量。
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