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Hasil cari dari kata atau frase: Echelon lens (0.00877 detik)
Found 1 items, similar to Echelon lens.
English → English (gcide) Definition: Echelon lens Echelon \Ech"e*lon\ ([e^]sh"e*l[o^]n), n. [F., fr. ['e]chelle ladder, fr. L. scala.] 1. (Mil.) An arrangement of a body of troops when its divisions are drawn up in parallel lines each to the right or the left of the one in advance of it, like the steps of a ladder in position for climbing. Also used adjectively; as, echelon distance. --Upton (Tactics). [1913 Webster] 2. (Naval) An arrangement of a fleet in a wedge or V form. --Encyc. Dict. [1913 Webster] Echelon lens (Optics), a large lens constructed in several parts or layers, extending in a succession of annular rings beyond the central lens; -- used in lighthouses. [1913 Webster]


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