英语词汇“cross at or below”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	cross at or below
释义	cross at or below cross (fix) at or below (altitude) An instruction used by ATC (air traffic control) when a maximum crossing altitude at a specific fix is required. It does not prohibit the aircraft from crossing the fix at a lower altitude; however, it must be at or above the minimum IFR (instrument flight rules) altitude.
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英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。

cross at or below