《英文msh词典》Radioisotopes,Barium
[入口词] Radioisotopes,Barium
[主题词] Barium Radioisotopes
[英文释义] Unstable isotopes of barium that decay or disintegrate emitting radiation. Ba atoms with atomic weights 126-129,131,133,and 139-143 are radioactive barium isotopes.