“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	sympathy sympatric hybridization sympatric speciation sympatric species symphilia symphonic ballet symphonic poem Symphonie Symphonie orchester des Bayerischen Rundfunks symphony symphony concertante Symphony of Lianhua Symphony of Pots, Bowls and Pots symphony orchestra symphotia symphysis symplasm symplast symplastic translocation symplastic transport symplectic symplectic algorithm symplectic automorphism symplectic basis symplectic bilinear form

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