英语单词

词典成语诗词造句字典单词小说古文名言

deuterium

英 [djuː'tɪərɪəm] 美 [djʊ'tɪrɪəm]

n. [核] 氘；[核] 重氢

IELTS

中文词源

deuterium 氘，重氢

deuter-, 二，词源同two. 因这种物理元素其质量为氢的两倍而得名。比较tritium.

英文词源

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," according to some sources from duo (see two), but according to Watkins the ground sense is "missing" and the Greek word is from PIE from *deu-tero-, suffixed form of root *deu- "to lack, be wanting." So called because it is twice the mass of hydrogen.

双语例句

1. More reactive are the heavier isotopes of hydrogen, deuterium and tritium.: 更为活跃的是氢的较重同位素, 氘和氚.

2. To produce deuterium requires an environment of high energy.: 为了产生氘,需要一个高能的环境.

3. The rings are opened with hydrogen chloride and deuterium chloride.: 应用氯化氢和氯化氘打开沅环.

4. Deuterium is widely used in the study of reaction mechanisms and in spectroscopic studies.: 氘广泛地应用于反应机理的研究和光谱分析.

5. The substituent is deuterium.: 取代基是重氢.