"1" .
"1" .
.
"" .
"accepted"@en .
.
"2018-02-12 16:53:18.0" .
.
"SDN:P07::9NLB8450" .
"false" .
"2018-02-12 16:53:18.0" .
"SDN:P07::9NLB8450" .
.
"SDN:P07::9NLB8450" .
"surface_radioactivity_content_of_208Tl"@en .
.
"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. \"Tl\" means the element \"thallium\" and \"208Tl\" is the isotope \"thallium-208\" with a half-life of 2.15e-03 days."@en .
.