更新时间：2024-05-06 21:58:54
abbr.钚(=plutonium)
abbr.推进装置(=propulsion unit)
Noun:- a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons; found in minute quantities in uranium ores but is usually synthesized in nuclear reactors; 13 isotopes are known with the most important being plutonium 239
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