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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
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uncountable set
uncountable space
uncountable system
uncountably infinite
uncouple
uncoupled axle
uncoupled modes
uncoupled wavefunction
uncoupling
uncoupling agent
uncovered
uncovered wooden documents
UNCSA
UNCTAD/ICC Rules for Multimodal Transport Documents
unctuous strangury
uncus
uncut book
uncut lens
undamped
undamped electrical oscillation
undamped natural frequency
undamped oscillation
undamped oscillator
undamped system
undec-
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