A thing used in tracing; spec.. A substance (as a radioactive isotope or a dye) with distinctive properties that is introduced into a system so…
| 单词 | θ130002 |
| 释义 | the mind > attention and judgement > discovery > instrument for detection > [noun] > substance used as tracer (3) tracer1938 A thing used in tracing; spec.. A substance (as a radioactive isotope or a dye) with distinctive properties that is introduced into a system so… radiotracer1949 a radioactive tracer (cf. tracer, n.1 2c). Subcategories:— scan using (1) |
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