planetary nebula nucleus

短语

词形变化

planetary nebula nuclei 复数 planetary nebula nuclei

别名

PNN

释义与例句

n.
  1. 1.

    The remnant hot luminous core of the stellar progenitor of the planetary nebula, which ionizes the surrounding planetary nebula.

    天文

词源

From planetary nebula + nucleus.

来源：wiktionary