各类的(局部)均值为： [Z(x)|x∈(1)]*=0.004g/t, [Z(x)|x∈(2)]*=0.0125g/t. [Z(x)|x∈(3)]*=0.020g/t, [Z(x)|x∈(4)]*=0.0276g/t. [Z(x)|x∈(5)]*=0.125g/t,按IK法可得总平均品位的估计值为Z
C++ 17 次浏览