英语词汇“primary surveillance radar”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	primary surveillance radar
释义	primary surveillance radar primary surveillance radar [′prī‚mer·ē sər′vā·ləns ‚rā‚där] (engineering) primary radar primary surveillance radar (PSR) A radar used for the surveillance of airspace that does not use aircraft transponder signals. A primary radar uses reflected radio signals only. AcronymsSeePSR
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primary surveillance radar