英语词汇“obstacle clearance box”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	obstacle clearance box
释义	obstacle clearance box obstacle clearance box [′äb·stə·kəl ¦klir·əns ‚bäks] (navigation) A rectangle on an aeronautical chart which encloses a number indicating the obstacle clearance required (in feet) on an approach segment where the box appears.
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