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position indicating mark
释义
position indicating mark
Encyclopedia
工学
水运交通指示
释
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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frescoes unearthed at Jiayuguan Wei and Jin tombs
frescoes unearthed at North Qi tomb of Wanzhang Village
frescoes unearthed at Prince Jiemin’s tomb
frescoes unearthed at Tang tomb of Lü Village
frescoes unearthed at the tomb of Xinmang period, Xincun Village, Yanshi City
frescoes unearthed at Wei Jiong’s tomb
frescoes unearthed at Xinmang tomb in Jingu Garden
fresh agricultural products
fresh agricultural products logistics
fresh agricultural products logistics mode
fresh air enthalpy control
fresh air system
fresh cocoon
fresh cocoon quality inspection
fresh cocoon reeling
fresh cut leaves
fresh cutting flowers
fresh-cut vegetables
Fresh Fish Delicacy in South Yangtze River
fresh ginger
fresh Goods Logistics
Fresh Green
freshness of aquatic products
freshness preservation of aquatic products
Fresh products E-commerce
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更新时间:2025/12/16 1:13:25