Through the analysis to indeteminacy of bomb calorific value for coal of A and B component,the evaluation on indeterminacy was underway,and the standard indeterminacy was synthetic at last.

• 通过对煤的弹筒发热量的不确定度A类和B类分量的分析,进行了不确定度分量评定,最终合成了标准不确定度。