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ผลลัพธ์ สำหรับ
*gregorian telescope*
หรือค้นหา:
gregorian telescope
,
-gregorian telescope-
WordNet (3.0)
cassegrainian telescope
(n) a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the center of the primary mirror,
Syn.
Gregorian telescope
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