请输入您要查询的英文单词:

 

单词 chemocline
释义

chemocline

noun

che·​mo·​cline ˈkē-mə-ˌklīn also ˈke- How to pronounce chemocline (audio)
plural chemoclines
: the boundary in a body of water that separates a fresh upper layer from a deeper layer containing higher concentrations of dissolved solids and gases
The boundary, called the chemocline, between the deep water, rich with gas and minerals, and the fresh upper water stays intact. Gas saturates the bottom water and stays trapped there, like the carbon dioxide in a sealed bottle of seltzer. Marguerite Holloway, New York Times, 27 Feb. 2001
This sulfide usually changes into a benign sulfate salt when the dissolved gas encounters oxygen to flourish at an underwater boundary called a chemocline. N. Moreira, Science News, 28 May 2005

Word History

Etymology

chemo- + -cline

Note: Term introduced by the British-born ecologist George Evelyn Hutchinson (1903-91; U.S. resident from the 1930's) in "A Contribution to the Limnology of Arid Regions," Transactions of the Connecticut Academy of Arts and Sciences, vol. 33 (1937), p. 74: "The zone of transition, where the rate of change of concentration with respect to depth is maximal, may be termed the chemocline."

First Known Use

1937, in the meaning defined above

随便看

 

英语词典包含469781条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/3/16 2:58:47