gas tracer analysis 气体示踪分析
Radionuclide tracer analysis is a third important method.
第三种重要方法是同位素示踪分析。
The Statistical analysis of piston ring tracer cutting errors shows that there is a systematic error in the tracer cutting.
对活塞环仿形车削误差的统计分析表明：靠模仿形加工中存在系统误差。
The combination of enriched stable isotope tracer studies and activation analysis techniques has become an ideal and reliable technique, especially in the fields of biology and medicine.
浓集的稳定同位素示踪研究和活化分析技术相结合已成为一种理想可靠的技术，在生物医学中更显示出它的特色。
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