英语词汇“signal board”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	signal board
释义	WordReference Random House Unabridged Dictionary of American English © 2024 sig′nal board′, a board for displaying electrically transmitted signals and indicating their source. Cf. annunciator.
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