- flat-lying refractor
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горизонтальная преломляющая граница
English-Russian dictionary of geology. 2011.
English-Russian dictionary of geology. 2011.
Optical telescope — Eight Inch refracting telescope (Chabot Space and Science Center) An optical telescope is a telescope which is used to gather and focus light mainly from the visible part of the electromagnetic spectrum for directly viewing a magnified image for… … Wikipedia