权威例句
ioniumIonium dating of igneous rocksIonium Determination in Deep-Sea SedimentsRatio of Ionium to Uranium in Coral LimestoneAnalysis of Ore Residues for Ionium and Protactinium1Radiochemical Determination of Ionium in Uranium Fluorination AshGeochronological studies of deep sea sediments by the ionium/thorium methodThe transport and deposition of uranium, ionium and radium in rivers, oceans and ocean sediments ☆Comparison of sedimentation rates measured by paleomagnetic and the ionium methods of age determinationStudies of the Solvent Extraction Behavior of the Transition Elements. II. Isolation of Gram Quantities of Th230 (Ionium) from a Pit...
