太阳面研究

heliography

太阳的英语翻译：

fireball; Phoebus; sun; sunlight; sunshine; the eye of day; the god of day
the star of day

面的英语翻译：

face; surface; cover; directly; range; scale; side
【医】 face; facies; facio-; prosopo-; surface

研究的英语翻译：

research; study; consider; delibrate; discuss; investigate
【医】 research
【经】 search; study