赤经刻度盘
/ˈɹaɪt ɐsˈɛnʃən/
n
English: right ascension setting scale · 赤经刻度盘
English · right ascension setting scaleEspañol · anillo graduado de ascensión rectaFrançais · cercle d’ascension droite
释义：Graduated disk indicating the right ascension of the observed celestial body. celestial coordinate system