. "SDN:P07::3EA1SMPO" . "surface_radioactivity_content_of_210Bi"@en . "" . "accepted"@en . . "1" . "false" . . "SDN:P07::3EA1SMPO" . "The surface called \"surface\" means the lower boundary of the atmosphere. \"Content\" indicates a quantity per unit area. \"Radioactivity\" means the number of radioactive decays of a material per second. \"Bi\" means the element \"bismuth\" and \"210Bi\" is the isotope \"bismuth-210\" with a half-life of 5.01e+00 days."@en . . "2018-02-12 16:53:18.0" . . "SDN:P07::3EA1SMPO" . . "1" . "2018-02-12 16:53:18.0" .