“whistle board”的概念、定义、翻译、参考文献-科学参考

单词	whistle board
释义	whistle board Encyclopedia 工学水运交通指示释 whistle board鸣笛标设在通航控制河段或上、下行船舶不能相互通视的急转弯的上下游两端河岸上，指示船舶鸣笛的水上助航标志。
随便看	Desarguesian space Desargues system Desargues theorem desaturase desaturation desaturator descaling descant Descartes Descartes crater Descartes-Euler polyhedral formula Descartes folium Descartes formula Descartes' method of doubt Descartes oval Descartes, René Descartes rule of signs Descartes snark Descartes theorem Descartes total angular defect descendant descendant field descendants Descendants of the Five Gallants Descendants of the Sun

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