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示位标
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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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carbon tetrachloride; perchloromethane
carbon tetrachloride poisoning
carbon tetrafluoride
carbon thermal reduction method
carbon thermal reduction process for smelting magnesium
carbon trade
carbon trading
carbon trading for transportation
carbon trading in agriculture
carbon trading market
carbon turnover
carbon-water coupling
carbony extrusion reaction
carbony-extrusion reaction
carbonylation
carbonyl cluster
carbonyl compound
carbonyl dichloride
carbonyl group
carbonylhemoglobin
carbonyl powder
carbonyl process
carbonyl sulfide
carbonyl sulfide (COS)
carbon-zinc battery
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