英语词汇“performance class 3 helicopter”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	performance class 3 helicopter
释义	performance Class 3 helicopter performance Class 3 helicopter A helicopter with performance such that, in case of power-unit failure at any point in the flight profile, a forced landing must be performed (ICAO).
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performance Class 3 helicopter