原发布者:1252qinghua
序号12345678910111213141516171819202122232425262728293031323334353637383940414243平均值＝标准差＝C25强度34.8035.80C1516.7016.1017.2022.4020.0020.7022.4022.7023.4025.4022.8021.8026.4021.7022.9023.5028.9023.1025.4020.2022.2022.306635.300.71平均值＝22.19标准差＝3.02离差系数＝概率系数＝0.0235.78离差系数＝概率系数＝0.142.3898.54