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Planetary Nebula. How to pronounce the english word Planetary Nebula.Start with S. Learn from me.



Planetary Nebula
  • 英语发声
  • 美语发声
  • [天] 行星状星云

    • 网络释义

    1、[天]行星状星云
    行星状星云(planetary nebula，PN)是质量小于8倍太阳质量的恒星演化到生命晚期，逐渐膨胀成红巨星阶段时，外层大气物质向太空逐渐扩张的结果，通常呈现同心圆状...
    2、行星状星云
    ...planetary circulation 行星环流planetary nebula 行星状星云planetary cooler 行星式冷却机,多筒冷...

    短语

    pre-planetary nebula前行星状星云

    Blinking Planetary Nebula英语

    bipolar r planetary nebula双极行星状星云

    bipolar planetary nebula双极行星状星云;行星状星云

    proto-planetary nebula原行星状星云;原始行星状星云

    Blue Planetary Nebula英语

    Planetary nebula luminosity function行星状星云亮度函数

    The Rotten Egg Planetary Nebula行星状星云

    专业释义

    天文学
    • 行星状星云

      参考来源 - 流体及磁流体力学在天体物理中的应用
    计算机科学技术
    • 行星状星云

    英英释义

    Planetary Nebula

    n.a nebula that was once thought to be a star with its planets but is now thought to be a very hot star surrounded by an expanding envelope of ionized gases that emit a fluorescent glow because of intense radiation from the star



    英汉双解大词典

    planetary nebula

    • 1.  

      N（名词） an expanding shell of gas surrounding a dying star, formed from matter ejected from the star's outer layers; the gas is ionized by the remaining hot stellar core, emitting light in the process 行星状星云