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单词 radioactivity equilibrium
释义 radioactivity equilibrium
[´rād·ē·ō·ak`tiv·ǝd·ē ´ē·kwǝ`lib·rē·ǝm]
NUCLEAR PHYSICS
A condition which may arise in the decay of a radioactive parent with short-lived descendants, in which the ratio of the activity of a parent to that of a descendant remains constant.
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