秤動ひょうどうひょうどうじ字FuriganaAudioMeanings1nounlibration; oscillation of a celestial bodyTechnical term in astronomy for the apparent wobbling or oscillation of a celestial body, especially the Moon, as seen from another body.月つきの秤ひょう動どうによって、地ち球きゅうからは月つきの表ひょう面めんの約やく59%が見みえる。Break this sentence down in the analyzerDue to the Moon's libration, about 59% of its surface is visible from Earth.
