radioactive dating的意思
radioactive dating中文翻譯:
放射性測定年代
dating───v.約會,與(某人)談戀愛;注明日期,寫上日期;確定年代;過時,不流行;使……顯老,顯出……的年齡大(date的現在分詞);adj.介紹婚姻的;n.約會
radiocarbon dating───放射性碳測定年代;碳同位素年齡測定;<正>放射性碳年代測定(法)
dating from───從什么時候開始
radioactive decay───[核]放射性衰變;放射衰變
chronometric dating───計時測年
dating day───約會日
dating services───約會服務
dating back───[經] 提前填日期
dating service───約會服務
Most famously, uranium-238 decays into lead-206 with a half life of 4.5 billion years, though radioactive rubidium and samarium are also useful for dating things billions of years old.───最為有名的就是鈾- 238衰變為鉛- 206的半衰期為45億年,當然放射性銣和釤也同樣對測算幾十億年前的物體的年齡很有用。
lived around 125 million years ago, based on the dating of radioactive elements in the sediments that encased the fossil.───通過對包裹化石的沉積層進行放射性元素年代測定,推斷出中華龍鳥生活在1.25億年前。
The potassium-argon radioactive dating method shows the crater was created within a gnat's whisker of the extinction.───鉀氬輻射斷代法結果顯示,這個隕石坑導致了恐龍的瞬間滅絕。