...计;标准公式法;简化公式法;工作曲线;比较法 [gap=600]Key words: alkali content; flame photometric; standard formula method; simplified formula method; work curve; comparative method ..
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The calculating formula for the measuring relative error of standard addition method of ion selective electrode was obtained.
从理论上导出了离子选择性电极一次标准加入法测量结果的相对误差计算公式。
Statistical data of thematic maps are graded with the method of model distinguishing in mathematics, and a formula for the standard of grading accuracy is given.
采用模糊数学中模式识别方法对专题地图统计数据进行分级，并定义了分级精度标准的计算公式。
The experiential frequency is calculated with formula recommended in the standard, and statistical parameters are calculated with matrix formula method.
经验频率采用规范中推荐的公式计算，统计参数用矩法公式计算。
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