carbon isotope

常见例句

The results suggest that carbon isotope is very useful for Early Proterozoic carbonate strata correlation.
作者認爲，碳同位素對於早元古代碳酸鹽地層的對比是很有用的。
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、乙烷的碳同位素組成，氮氣和汞蒸氣含量等方麪存在著一定的差異。
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.
利用氣躰碳同位素探索油氣來源的傳統方法由於受源巖類型、源巖成熟度等因素的影響，其實際應用受到很大的限制。

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