MIL-M-21188A
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时间:2024-05-19 02:19:40
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MIL-M-21188A, MILITARY SPECIFICATION: MIRROR ASSEMBLY, CONCAVE GROUND GLASS, OPTICAL LANDING SYSTEM (26 APR 1972) [NO S/S DOCUMENT]., This specification covers one type of concave front surfaced mirror assembly required for permanent shore-based optical landing systems.
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