pulsator
Alternative form of match day
(astronomy) Any pulsating astronomical object / (dated) A beater; a striker. / (engineering, dated) That which beats or throbs in working. / A pulsometer.
plural of mount of Venus
present participle of balloon
研究チームは、数秒ごとに明るさが規則的に変化する遠方の脈動天体を観測した。
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