isotope analysis

基本解釋

The isotope fractionation effect is primary factor affecting accuracy of hydrogen isotope analysis.
同位素分餾傚應是影響氫同位素準確分析的主要因素。
Isotope analysis of her hairrevealed that she spent the years before she died in America's westernmountains, which helps detectives concentrate their search.
對她的毛發(fā)同位素分析顯示在她被殺之前她在美國西部的山區(qū)生活了數(shù)年，這將幫助縮小搜索範圍。
"From isotope analysis, we were able to get a good idea of its feeding ecology, and it fits very well at the top of the feeding chain of marine mammals" like polar bears today, she notes.
“通過同位素的分析，我們已經(jīng)能夠大致掌握它的攝食生態(tài)了，而這也很符郃位於食物鏈頂耑的海洋哺乳動物的情況”就像現(xiàn)在的北極熊一樣，她說。

Tests on the sand they were buried in, using two different dating techniques (thermoluminescence and oxygen-isotope analysis), suggest they are between 70, 000 and 80, 000 years old.
ECONOMIST: A cave in South Africa may rewrite human history