surface_radioactivity_content_of_222Ra

https://w3id.org/hacid/data/cs/variables/cf/surface_radioactivity_content_of_222Ra <https://w3id.org/hacid/onto/data/Variable>

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. "Ra" means the element "radium" and "222Ra" is the isotope "radium-222" with a half-life of 4.41e-04 days. rdf:langString

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rdf:langString surface_radioactivity_content_of_222Ra

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