“Keyhole Nebula”的概念、定义、翻译、参考文献-科学参考

单词	Keyhole Nebula
释义	Keyhole Nebula Encyclopedia 理学暗星云释 Keyhole Nebula锁眼星云位于明亮的船底座η星云（NGC3372）中心的暗星云，其形状类似锁眼而得名。 Astronomy Keyhole Nebula钥匙孔星云
随便看	submillimetre astronomy Submillimetre Common User Bolometer Array submillisecond optical pulsar submillisecond pulsar submineering subminiature subminiature component subminiature engineering subminiaturize subminimum submission for approval Submit a Poetry Depicting the Cold Wind Blows the Fire and a Letter to Qianpian who Served in the Criminal Department submitted memorials open for discussion submitted official document submitting financial reports to the throne for approval submodel submodular submodular function submodularity submodular polyhedron submodular system submodulator submodule submonoid submonolayer

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