单词 | periscopic sextant |
释义 | periscopic sextant [´per·ǝ`skäp·ik `sek·stǝnt] NAVIGATION 1. A sextant designed to be mounted inside an aircraft, with a tube extending vertically upward through the skin of the aircraft. 2. A sextant designed to be used in conjunction with the periscope of a submarine. |
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