这种放射示踪剂是一种具有放射活性的复合物，具有注射安全且扫描显示清晰的优点。
A radiotracer is a radioactive compound that is safe to inject into patients and shows up clearly on a scan.
结论活性炭有较强的趋淋巴性，在淋巴结中驻留时间长，其本身无毒性，可作为淋巴结示踪剂及药物载体。
Conclusions the activated carbon can be used as a useful lymphatic tracer and drug carrier, for it is characterized by avirulence, high lymphatic tropism, long residence time in the lymph nodes.
研究了一种油田用新型同位素示踪剂，并与以活性炭为载体的同位素示踪剂进行了对比研究，应用表明使用效果良好。
A new-type tracer was studied and contrasted with the acticarbon tracer in logging for water flooding oil field. The using effect showed that the tracer was better than the acticarbon tracer.
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