Anything used in a scientific experiment to indicate the presence of a substance or quality, change… An isotope (usually a radioactive one) used…
| 单词 | θ79602 |
| 释义 | the world > matter > physics > atomic nucleus > radioactive isotope > radioactive label > [noun] > isotope used as tracer (5) indicator1919 Anything used in a scientific experiment to indicate the presence of a substance or quality, change… An isotope (usually a radioactive one) used… tritium1933 A radioactive heavy isotope of hydrogen, having two neutrons as well as a proton in the nucleus, which constitutes one part in 1018 of the… radiophosphorus1934 A radioactive isotope of phosphorus; spec. phosphorus-32, which decays by beta emission with a half-life of 14.3 days, and is widely used as a… Subcategories:— radio-iodine (2) |
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