tracer isotope

基本解释

Technetium-99, a fission product of nuclear reactors that emits gamma rays, is the most-used tracer isotope in nuclear medicine.
鎝-99是核反应堆的裂变产物，是原子核医学中最有用的同位素。
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This paper presents a determination method of specific activity for uranium isotope in rocks, soil, water and thorium isotope in rocks using 232U as a tracer isotope.
本文介绍了用（232U）作示踪同位素，测定岩石、土壤、水体中铀同位素及岩石中钍同位素比活度的方法。
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。

The isotope, known as a medical tracer, is made outside the United States by a complicated process requiring highly enriched uranium from nuclear reactors.
NEWYORKER: Fussbudget