“navigation aids”的概念、定义、翻译、参考文献-科学参考

单词	navigation aids
释义	navigation aids Encyclopedia 工学水上安全保障释 navigation aids航标设置于海上、海岸或江河的易见处，以特定的标志、灯光、音响或无线电信号，用以帮助船舶定位、引导船舶航行、表示警告和指示碍航物的人工标志。全称助航标志。
随便看	Boulle's marquetry technique Boulliau boult Bouma sequence bounce bounce-back bounce frequency bounce rate bounce resonance bouncing model bouncing of liquid stream bound boundaries of land rights boundaries of the active block boundary boundary adjustment boundary arc boundary behavior boundary cell boundary chain boundary circle boundary cluster set boundary collocation Boundary Commission of Liberia boundary complex

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。