作　　者： (宗开梅）; (王春生）;

机构地区： 宝山钢铁股份有限公司制造管理部,上海200941

出　　处： 《冶金标准化与质量》 2017年第4期15-17,共3页

摘　　要： 本文采用例行子样数双份采样法，分析进厂煤的干基灰分，对某公司某取制样系统进行精密度、偏倚性即取样代表性进行评估。结果表明：某公司某取制样系统精密度满足期望要求、可以接受为无偏倚系统。 To evaluate the representation of a coal mechanical sampling of one company, duplicate sampling during routinesampling is employed to verify the precision and bias of sampling through testing the Ad of coal. The results show that theprecision and bias of the coal mechanical sampling meet the expectations, and the results obtained from the coal mechanicalsampling of the company are representative.

关 键 词： 煤 取制样 代表性 精密度 偏倚试验