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单词
cobalt 60
释义
WordReference Random House Unabridged Dictionary of American English © 2024
cobalt 60,
[
Chem.
]
Chemistry
a radioactive isotope of cobalt having a mass number of 60 and a half-life of 5.2 years, used chiefly in radiotherapy.
1945–50
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更新时间:2025/7/3 7:22:16