“position indicating mark”的概念、定义、翻译、参考文献-科学参考

单词	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。
随便看	grass downy mildew grass dragon grass endophyte grass endophyte detection methods grass ergot disease Grasses grasses powdery mildew grass family grass fence grass-fish system grass fly grass germplasm nursery grass gray leaf spot Grasshoppers grassing for soil and water conservation grassland grassland adaptive management grassland administration grassland agriculture Grassland Agriculture Ecology grassland agro-ecosystem grassland Agro-system grassland amphibians grassland and livestock system Grassland and Turf

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。