stderr这单词什么意思?请帮我把这一起翻译出来谢谢：Eff.Diam = 25.0m Eff.Area = 490.6 mm2 Knownconc = 0% Rest =0% Viewed Mass = 18000.00 mg Dil/SaMple =0% Sample height = 5.00mm < means that the concentration is < 0 mg /kg <2e means wt% <2 stderr .A +or means :part of 100% sum 这是矿石化验表上的.
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【答案】 stderr -- 标准误差.Eff.Diam = 25.0m 有效直径 25 米.（有这么大的吗,mm吧?你漏了一个m?）Eff.Area = 490.6 mm2 有效面积 490.6 平方毫米Knownconc = 0% 已知浓度.Rest =0% -- 其余Viewed Mass = 18000.00 mg -- 视...