“proto-planetary nebula”的概念、定义、翻译、参考文献-科学参考

单词	proto-planetary nebula
释义	proto-planetary nebula Encyclopedia 理学原行星状星云释 proto-planetary nebula;proto-PNe原行星状星云中小质量恒星（0.8～8.0太阳质量）处在从渐近巨星支（AGB）恒星向行星状星云过渡的一个快速演化阶段（持续时间约1000年）的天体。 Astronomy proto-planetary nebula原行星状星云
随便看	positive Hermitian operator positive homogeneous function positive hull positive image positive index of inertia positive infinity positive integer positive integral kernel positive interaction between nutrients positive ion positive ion, cation positive ion mode positive kernel positive kurtosis positive leap second positive lens Positive likelihood ratio positive limit point positive limit set positive linear functional positive linear operator positive link positive literal positive logic positive logical calculus

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