这个词是什么意思？
Separation systems containing a relatively long-lived parent radionuclide which produces a short-lived daughter in its decay scheme. The daughter can be periodically extracted (milked) by means of an appropriate eluting agent.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D011876 · MeSH 2026。
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