Finally the article evaluates the methodology, data source, the measurement of key index, the selection of industry and controlled variable.
最后对文章所使用文献的方法、数据来源、关键指标的衡量、产业的选择及控制变量进行分析与评价。
The repeatability and reproducibility variation of measurement systems is a major source of differences of measurement data fluctuation, and influences the performance of control charts.
测量系统的重复性和再现性（R&R）变异是测量值波动的一个重要来源，它对于控制图的性能会造成影响。
The process of pretreatment was confirmed by the source of some contaminants after excluding uncertainties from data processing and instrument measurement.
对容器污染、试剂干扰、前处理间环境污染和氮吹浓缩系统等因素的排查结果表明，氮吹浓缩系统是主要的污染源。
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