The isotope analysis of minim lead in the gold dust has special meaning.

砂金中的微量铅同位素分析具有特殊的意义。

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This text summarized the advancement of the use of isotope analysis of herbicide remainder.

本文综述了利用同位素示踪技术对除草剂的残留分析进展。

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The isotope fractionation effect is primary factor affecting accuracy of hydrogen isotope analysis.

同位素分馏效应是影响氢同位素准确分析的主要因素。

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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

Combined with finds of exotic objects in and around the circles, the evidence from isotope analysis of the bones of animals eaten at these sites points to the fact that people were travelling to get to them.

BBC: Discovering Britain��s prehistoric stone circles

Another analysis, also published in the journal Science, looks at the amount of the isotope beryllium-10 in the lunar soil.

BBC: Apollo samples reveal Moon's origin