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Owl Nebula
释义
Owl Nebula
Encyclopedia
理学
行星状星云
释
Owl Nebula
夜枭星云
位于大熊星座的一个比较复杂的行星状星云。星表中的编号为M97和NGC3587。距离地球2030光年(621秒差距),视星等为9.9,年龄约8千年。又称猫头鹰星云。
Astronomy
Owl Nebula
夜枭星云
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ordered phase
ordered plane
ordered point defect
ordered polynomial
ordered principal minor
ordered product
ordered projective line
ordered projective plane
ordered quadruplet
ordered quasi-field
ordered reading official document
ordered ring
ordered sample
ordered sample cluster analysis
ordered sample clustering
ordered semigroup
ordered sequence
ordered set
ordered set with gaps
ordered set without gaps
ordered simplex
ordered simplicial complex
ordered singular boundary
ordered singular cycle
ordered skew field
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