isotopes of oxygen أمثلة على

• What's even more interesting, I think, is they can measure the different isotopes of oxygen and figure out a very precise thermometer and tell you what the temperature was the year that that bubble was trapped in the snow as it fell.
  ما يثير الاهتمام باعتقادي أنهم يستطيعوا قياس مختلف نظائر الأوكسجين ويأتوا بميزان حرارة دقيق