carbon isotope

常见例句

The results suggest that carbon isotope is very useful for Early Proterozoic carbonate strata correlation.
作者认为，碳同位素对于早元古代碳酸盐地层的对比是很有用的。
They are different from each other in toluene contents, the carbon isotope composition of ethane and the nitrogen and mercury vapor contents, etc.
二者在甲苯、乙烷的碳同位素组成，氮气和汞蒸气含量等方面存在着一定的差异。
The application value of traditional method to explore the oil and gas source using carbon isotope was bounded by the type and maturity of source rock.
利用气体碳同位素探索油气来源的传统方法由于受源岩类型、源岩成熟度等因素的影响，其实际应用受到很大的限制。

The test, called a carbon isotope ratio test, can distinguish naturally produced from artificial testosterone.
NPR: Landis Facing Uphill Battle on Doping Charges
Late Wednesday, his lawyer, Howard Jacobs, acknowledged he'd received a written statement that the carbon isotope test showed the presence of synthetic testosterone.
NPR: Landis Facing Uphill Battle on Doping Charges
Hers is not the lab that did the tests on Floyd Landis, but Dr. Ayotte has used the carbon isotope test since the late 1990s.
NPR: Landis Facing Uphill Battle on Doping Charges