deuterium
deuterium 英 [djuː'tɪərɪəm] 美 [djʊ'tɪrɪəm]
n. [核] 氘；[核] 重氢
名词复数:deuteriums
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- n. [核] 氘；[核] 重氢
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1. However, there is a very attractive reaction between deuterium and a light isotope of helium known as helium-3.
无论如何，在氘和一个氦的轻同位素也就是氦-3之间有一种吸引人的反应。
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2. If such a design can be successfully used for a starship engine, then a source of deuterium can be sought closer to home.
如果这样一个设计可以成功的用于星际飞船发动机，那么氘能源可以在离家更近的地方找到。
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3. Unlike helium-3 we know the moon has large amounts of hydrogen, as ice, and a significant fraction of it will be deuterium.
不同于氦-3，我们知道，月球有大量的氢，以冰的形式存在，以及它的一个重要部分将是氘。
- deuterium (n.) 1933, coined by U.S. chemist Harold C. Urey, with Modern Latin ending + Greek deuterion, neuter of deuterios "having second place," from deuteros "next, second," a word of uncertain origin. According to some sources from duo "two" (from PIE root *dwo- "two"), but according to Watkins the ground sense is "missing" and the Greek word is from PIE from *deu-tero-, suffixed form of *deu- (1) "to lack, be wanting." But Beekes doubts even this. So called because it is twice the mass of hydrogen.
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