белсенді оптикалар

белсенді оптикалар

Controlling the shape of a telescope mirror at a relatively slow rate.

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Loại từ: noun
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Ngành nghề/Lĩnh vực: Astronomy
Category: General astronomy
Company: Caltech
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the light produced by excited atoms and ions in the upper atmosphere of a planet

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Ngành nghề/Lĩnh vực: Water bodies Category: Lakes

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A body of relatively still fresh or salt water of considerable size, localized in a basin that is surrounded by land. Lakes are inland and not part of ...