isotope

名词[化]同位素

1. 同位素：科学家估计宇宙的年龄是介乎一百亿至一百六十亿之间;2001年科学家利用南欧洲天文台(EuropeanSouthernObservatory)的望远镜,观察一颗称CS31082-001的星球,量度星球上放射性(tive)同位素(isotope)铀-238(Uranium-238)的光谱(trum),

2. [化]同位素：erotogenic 性感应区的,动欲的,动情的,引起性欲的 | isotope [化]同位素 | teartape 撕条, 拉带

3. 同种位;同位素：isotonic 等渗的 | isotope 同种位;同位素 | isotropic 各向同性的

4. 同位元素：isomer-異性体 | isotope-同位元素 | Kelvin-絶対温度

1. isotope的近义词

1. 同位素
    Isotopes are atoms that have the same number of protons and electrons but different numbers of neutrons and therefore have different physical properties.

    e.g. ...tritium, a radioactive isotope of hydrogen.
           氢的放射性同位素氚

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. danci.911cha.com

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. isotope

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. isotope

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. isotope是什么意思

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.

noun