radioactive tracer

• 放射性示踪剂,放射性指示剂

radioactive tracer的用法和样例：

例句

1. The chemical tracer, especially the perfluorocarbon tracer and sulphur hexafluoride, has been used much more popularly than the radioactive tracer nowadays.
   化学示踪剂已取代放射性示踪剂在混相驱中的主导地位，其中，全氟环烷烃和六氟化硫是目前现场广泛试验和应用的化学气体示踪剂。
2. The highly sensitive radio tracer technique is often used to follow tagged synthetic soil ingredients.
   高灵敏度的放射性示踪技术，已经常用于跟踪标志污垢成分的试验。
3. The chemical tracer, especially the perfluorocarbon tracer and sulphur hexafluoride, has been used much more popularly than the radioactive tracer nowadays.
   化学示踪剂已取代放射性示踪剂在混相驱中的主导地位，其中，全氟环烷烃和六氟化硫是目前现场广泛试验和应用的化学气体示踪剂。