“Orion molecular clouds”的概念、定义、翻译、参考文献-科学参考

单词	Orion molecular clouds
释义	Orion molecular clouds [ǝ`rī·ǝn mǝ`lek·yǝ·lǝr `klau̇dz] ^ASTRONOMY Two molecular clouds in the Orion Nebula; one has about 300,000 hydrogen molecules per cubic centimeter and contains the Becklin-Nengebauer object and the Kleinmann-Low Nebula, while the other is centered on a cluster of infrared sources.
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