这个词是什么意思？
A radioactive element of the actinide series of metals. It has an atomic symbol U, atomic number 92, and atomic weight 238.03. U-235 is used as the fissionable fuel in nuclear weapons and as fuel in nuclear power reactors.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D014501 · MeSH 2026。
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