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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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local government agreement
local government annexation
local government debt
Local Government in China Under the Ch’ing
local government-run school
local governments' and public schools' primary responsibility for children's education of rural migrant workers
local government–run school
local ground field
Local Group
local group
Local group of galaxies
local group of galaxies
local group theory
local heat treatment
local height
local height machine
local helioseismology
local hidden variable
local homeomorphism
local homology
local homology group
local homomorphism
local hour-angle
local household registration of migrants
local hypothesis of quasars
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