英语词汇“approach surface”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	approach surface
释义	approach surface approach surface An imaginary surface longitudinally centered on the extended centerline of the runway, beginning at the end of the primary surface and rising outward and upward to a specified height above the established airport elevation.
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