“variable nebula”的概念、定义、翻译、参考文献-科学参考

单词	variable nebula
释义	variable nebula [`ver·ē·ǝ·bǝl `neb·yǝ·lǝ] ^ASTRONOMY A nebula whose shape and brightness vary; an example is in the constellation Monoceros.
随便看	lifting lifting block lifting body lifting condensation level lifting device lifting dog lifting guard lifting magnet lifting reentry lifting reentry vehicle lifting task lifting torque lift-off lift pump lift-slab construction lift truck lift valve ligament ligamentum nuchae ligand ligand membrane ligase ligate tar ligation ligature

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