发射星云 fāshèxīngyún emission nebula Definitions Defs Origin Strokes Stroke Words Sentences Sents 发射星云 發射星雲 fāshèxīngyún emission nebula A glowing cloud of interstellar gas that shines with light at various wavelengths, typically ionized by radiation from nearby hot stars. stars.
发射星云 發射星雲 fāshèxīngyún emission nebula A glowing cloud of interstellar gas that shines with light at various wavelengths, typically ionized by radiation from nearby hot stars. stars.
