英语词汇“indefinite call sign”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	indefinite call sign
释义	indefinite call sign indefinite call sign A call sign which does not represent a specific facility, command, authority, activity, or unit, but which may represent any one or any group of these. See also call sign.
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