sextant

特殊用法air sextant1.航空六分仪automatic sextant1.自动六分仪bubble sextant1.气泡六分仪clamp screw sextant1.制动螺钉六分仪double sextant1.双六分仪electronic sextant1.电子六分仪gyroscope sextant1.陀螺六分仪hydrographic sextant1.水文地理测量六分仪marine sextant1.航海六分仪navigating sextant1.船舶(导航)六分仪pendulum sextant1.摆式六分仪periscopic sextant1.潜望镜六分仪radio sextant1.射电六分仪vernier sextant1.游标六分仪
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