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declination setting scale /dɪklɪnˈeɪʃən/ n

中文：赤纬盘

中文 · 赤纬盘Español · anillo graduado de declinaciónFrançais · cercle de déclinaison
Meaning：Graduated disk indicating the declination of the celestial body observed. celestial coordinate system
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Reflecting telescope

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