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interior dome shell /ɪntˈiəɹiə ˈdəʊm ˈʃɛl/ n

中文：圆顶内壳

中文 · 圆顶内壳Español · cubierta interior de la cúpulaFrançais · enveloppe intérieure
Meaning：Regulates the temperature of the telescope so as to avoid air turbulence and prevent the mirror from becoming deformed.
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Observatory cutaway

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