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古姆星云
释义
古姆星云
Encyclopedia
理学
原行星状星云
释
Gum Nebula
古姆星云
已知的最大角尺度的发射星云。延展角度大约40°(月亮在天空中的尺度为0.5°),横跨南天船帆星座和船尾星座。又称Gum 12。
Astronomy
Gum Nebula
古姆星云
随便看
National Council of Women of New Zealand
National Council on Education for the Ceramic Arts
national credit
National Crop Germplasm Bank
National Crop Variety Committee Tea Professional Board
National Cultural Industry Demonstration Base
National Cultural Industry Innovation and Development Research Base
National Cultural Information Resource Sharing Project
National Cultural Palace
National Cultural Park
National Cultural Security
National Culture and Technology Integration Demonstration Base
National Culture and Tourism Consumption Pilot City
national dangerous reservoir reinforcement special planning
national database on groundwater contamination investigation
National Day of the the People with Disability
National Day Top Ten Projects
national debt law
national defence engineering
national defence film
National Defense Committee of KMT
national defense drama
National Defense Education Act (U.S.A.)
national defense forests
national defense photography
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