deuterium

FREQ #46342

n. 氘, 重氢 [化] 氘; 重氢

发音

UK /djuːˈtɪəɹɪəm/
其它
UK /dʒuːˈtɪəɹɪəm/
US /djuːˈtɪɹi.əm/

词形变化

deuteriums 复数 deuteriums

释义与例句

n.
  1. 1.

    An isotope of hydrogen with one proton and one neutron in each atom - 21H.

    氘

    不可数 物理 可数

    Heavy water is "heavy" because it contains deuterium.

  2. 2.

    An atom of this isotope.

    可数 不可数

    There were about 80 deuteriums for every million protiums, and virtually no tritium.

词汇关系

名词

同义词 1

heavy hydrogen

上位词 1

isotope

相关短语

deuterium oxide [化] 重水 [医] 氧化氘, 重水 deuterium bottleneck

词源

From deutero- + -ium. Coined by American physical chemist Harold Urey, from Ancient Greek δεύτερος (deúteros, “second”).

来源：wiktionary