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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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negatively stable point
negatively stable solution
negative magnetoresistance
negative mapping
negative matrix
negative meson
negative metric
negative molecule
negative multinomial distribution
negative nitrogen balance
negative norm
negative number
negative octant
negative orientation
negative orthant
negative parallax
negative part
negative particular proposition
negative part of a function
negative part of an element
negative peak
negative pedal curve
negative perfect correlation
negative permeability materials
negative permittivity materials
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