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航道侧面标
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航道侧面标
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fairway side mark
航道侧面标
设在浅滩、礁石、沉船或其他碍航物靠近航道一侧,标示航道的侧面界限;设在水网地区优良航道时,标示岸形、突嘴或不通航的汊港的水上助航标志。指示船舶在航道内航行。
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first demographic transition
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first derivative test
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first differential parameter
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first display at Nantong Museum
First Display at the Musée Hoangho Paiho
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First Edition of Serial Book List
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first emptiness
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First Fair of Theatrical Troupes from Southwestern Provinces
first Fermat point
first field free region
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first field free region (1st FFR)
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