最終更新日:2024/06/27
Le miroir concave de l'tlescope permet de concentrer la lumi�re des �toiles.
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The concave mirror of the telescope allows to concentrate the light from the stars.
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Le miroir concave de l'tlescope permet de concentrer la lumi�re des �toiles.
The concave mirror of the telescope allows to concentrate the light from the stars.