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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
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