“Ring Nebula”的概念、定义、翻译、参考文献-科学参考

单词	Ring Nebula
释义	Ring Nebula [`riŋ `neb·yǝ·lǝ] ^ASTRONOMY A nebula in the summer constellation Lyra; it is an example of the planetary type of gaseous nebulae.
随便看	in-line assembly machine in-line coding in-line engine in-line equipment in-line guns in-line linkage in-line procedure in-line processing in-line subroutine in-line tuning innage innate inner automorphism inner barrel inner bottom inner bremsstrahlung inner cell mass inner core inner ear inner function inner harbor inner hearth inner keel inner Lagrangian point inner mantle

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