“carbon-nitrogen cycle”的概念、定义、翻译、参考文献-科学参考

单词	carbon-nitrogen cycle
释义	carbon-nitrogen cycle [¦kär·bǝn ¦nī·trǝ·jǝn ´sī·kǝl] ^{NUCLEAR PHYSICS} A series of thermonuclear reactions, with release of energy, which presumably occurs in stars that are more massive than the sun; the net accomplishment is the synthesis of four hydrogen atoms into a helium atom, the emission of two positrons and much energy, and restoration of a carbon-12 atom with which the cycle began. Also known as carbon cycle; nitrogen cycle.
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