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本文主要论述块状矿石显微镜下矿物含量点测法的估计定律，以及此定律的简要证明、测量统计中最低限度样本容量的确定及误差范围。
This paper mainly discusses the estimation law of spot measurement of mineral content under lump ore microscope, as well as a brief proof of this law, the determination of the minimum sample size and the error range in measurement statistics.