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水运交通指示
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position indicating mark
示位标
设在湖泊、水库、水网地区或其他宽阔水域与重要航道附近,标示岛屿、浅滩、礁石及通航河口等特定位置,供船舶定位或确定航向的水上助航标志,又称灯塔。在内河航道可以为各种形状的塔形体。塔身外涂有显明的颜色,便于船舶识别。
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Kew Royal Botanic Gardens
Kewu
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kexue prescription
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Keyan Sculpture and Cliffside Sculptures
key aspects of pulse manifestation
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Key Case Sampling
key case study
Key chain project management
key characteristics of bonds
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key commercial vehicles joint control system
key-controlled time signal
key control technology
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