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High precision FOG is the important part of navigation and guidance system.
高精度光纤陀螺是导航与制导系统的主要组成部分。
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They were also used in harbor channels for navigation at night and in fog.
港口和海峡也会用于夜晚和雾天的导航。
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They were also used in harbor channels for navigation at night and in fog.
港口和海峡也会用于夜晚和雾天的导航。
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