化学测定 meaning in Chinese

chemical assay
chemical gaging
chemical gauging

Test method for the radiochemical determination of americium - 241 in soil by alpha spectrometry
光谱法对土壤中镅- 241进行放射化学测定的试验方法
Establishing parameters and the predictive effects of the models were evaluated in this study as well
结果表明：近红外预测值与化学测定值之间具有很好的相关性，各模型均具有较好地预测准确性。
In order to test the prediction feasibility of total sugar , total nitrogen , nicotine , potassium and chlorine content in tobacco sheet , predictive models were established by partial least square ( pls ) technique , based on the data of nir diffuse reflective spectrum and determined chemical results of 250 tobacco sheet samples
摘要为了研究近红外光谱分析技术预测烟草薄片中的总糖、总氮、烟碱、钾和氯含量的可行性，本文以250个具有代表性的烟草薄片样品的近红外漫反射光谱数据和它们相时应化学测定数据为基础，通过偏最小二乘回归法( pls )建立了以上5种成分的近红外分析模型，并对模型的预测效果进行了评价。