isotope是什么意思 isotope在线翻译 isotope什么意思 isotope的意思 isotope的翻译 isotope的解释 isotope的发音 isotope的同义词 isotope的反义词

名词[化]同位素

1. Radiocarbon dating depends on measuring the radioactive isotope of carbon known as carbon 14, which is ingested during a lifetime and steadily decays after death.

2. The NFL said it would also introduce the additional use of carbon isotope ratio testing on a random basis to detect low doses of testosterone.

3. He died an agonizing death in London after ingesting a lethal dose of the radioactive isotope polonium 210.

4. In the experiments, researchers fired a rare isotope of calcium at a target made from americium.

5. Litvinenko died in London in November from poisoning by a rare radioactive isotope.

6. Centrifuges spin compounds of uranium at supersonic speed to separate out and concentrate the most radioactive isotope of the element.

7. This study is the first in which a single sample of FAN yielded consistent ages from multiple isotope dating techniques.

8. Previously, carbon isotope testing was only used to confirm positive tests for testosterone.

9. The radioactive isotope was also found on lettuce in Jiangsu and Indian lettuce in Guangdong.

10. The technique is also being used to refine current radio carbon dating processes, which use the carbon 14 isotope to measure the age of an archaeological sample.