It is a radiological poison, specifically absorbed by bone marrow, and is used, especially the highly fissionable isotope Pu 239, as a reactor fuel and in nuclear weapons.
尤其是其极具可裂变性的同位素钸239，被用作一种核反应燃料并用在核武器中。
The isotope of uranium with mass number235, fissionable with slow neutrons.
锕铀铀的同位素，原子质量数为235，与慢。
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