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-现代词典

单词	obstacle-clearance box
释义	obstacle-clearance box obstacle-clearance box A rectangle on an aeronautical chart that contains the number indicating the obstacle-clearance required (in feet) on the approach segment where the box appears.
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