Method for determination of crude protein in cereals and beans seeds semi - micro kjeldahl method 谷类豆类作物种子粗蛋白质测定法半微量凯氏法
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Uncertainty evaluation of measurement results for the determination of total nitrogen in soil samples by semimicro - kjeldahl method 半微量凯氏法测定土壤全氮量的不确定度评定