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螺旋星云
释义
螺旋星云
Encyclopedia
理学
行星状星云
释
Helix Nebula
螺旋星云
位于宝瓶座,标准历元J2000的赤经22h29m38.54s,赤纬-20°50′13.64″的行星状星云。《星云星团新总表》中的编号为NGC7293,是离地球最近最明亮的行星状星云。
Astronomy
Helix Nebula
螺旋星云
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provitamin D3(DHC)
Prov MikhailovichSadovsky
Provosts of the Marshals of France
pro water rights
prowler program
PROX
proxemics
proxicon
Proxima Centauri
proximal
proximal connectedness
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proximal humeral fracture
proximality
proximal limb
proximally continuous mapping
proximal point
proximal point algorithm
proximal point method
proximal pole
proximal shield
proximal soil sensing
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