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isotopes
同位素
常用释义
英式发音
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基本释义
  • n. [核]同位素（isotope 的复数）；核素
例句
  • 1·Such anomalies are due to the relative abundance of the "isotopes" or varieties of each element.
    这种反常现象是由于同位素比较丰富或者各个元素比较多样化。
  • 2·The isotopes of a given element have the same chemical properties but slightly different physical properties.
    一个特定元素的同位素具有相同的化学特征，但在物理性质上有一些细微差异。
  • 3·Most hydrogen and oxygen atoms in water are stable, but traces of both elements are also present as heavier isotopes.
    在水中大多数氢原子和氧原子是稳定的，但这两个元素也有微量以较重的同位素形式存在。
  • 4·She had often carried test tubes containing radioactive isotopes in her pocket, remarking on the pretty blue-green light they gave off.
    她经常把装有放射性同位素的试管放在口袋里，对试管里发出的漂亮的蓝绿光赞不绝口。
  • 5·By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.
    通过测量一束头发上较重的氢和氧同位素的比例，科学家可以构建一个地理时间轴。
  • 6·All the isotopes of a given element have the same number of protons, but differ in their number of neutrons, and hence in their atomic mass.
    给定元素的所有同位素都含有相同的质子数，但它们的中子数不同，因此它们的原子质量也不同。
  • 7·Heavier isotopes tend to be left behind when water evaporates from the ocean surfaces, the remaining ocean water becomes progressively enriched in oxygen 18.
    当水从海洋表面蒸发时，往往会留下较重的同位素，所以剩余的海水会逐渐富含氧18这种同位素。
  • 8·Researchers' clues to the Eemian climate come from measurements of the ratios of two slightly different types of oxygen, isotopes oxygen-16 and oxygen-18, preserved in the GRIP core.
    研究人员对间冰期气候的线索来自保存在 GRIP 冰芯中的两种略微不同类型的氧——即同位素氧-16和氧-18的比率。
  • 9·About the same time, though, scientists realized comets might contain decaying radioactive isotopes that could have warmed cometary interiors to temperatures that caused the interiors to evolve.
    然而，大约在同一时间，科学家们意识到彗星可能含有衰变的放射性同位素，这些同位素可能使彗星内部的温度升高到导致内部进化的温度。
  • 10·We talked about isotopes, and whatnot.
    我们已经讨论了同位素等。
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