| 单词 | carbon-nitrogen cycle |
| 释义 | carbon-nitrogen cyclen.A chain of thermonuclear reactions in which nitrogen isotopes are formed in intermediate stages and carbon acts essentially as a catalyst to convert four hydrogen atoms into one helium atom with the emission of two positrons. The entire sequence is thought to generate significant amounts of energy in the sun and certain other stars.carbon cycle nitrogen cycle Words nearby carbon-nitrogen cyclecarbon monoxide hemoglobin, carbon monoxide poisoning, carbonnade, carbon nanotube, carbon neutral, carbon-nitrogen cycle, carbon offset, carbon offsetting, carbonous, carbon paper, carbon process The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for carbon-nitrogen cyclecarbon-nitrogen cycle See carbon cycle. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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