Chem.
the uranium isotope with a mass number 239. It is artificially produced by the neutron bombardment of uranium 238. Also called U-239, U 239 .
Chem.
the uranium isotope with a mass number 239. It is artificially produced by the neutron bombardment of uranium 238. Also called U-239, U 239 .
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012