英语词汇“usable ceiling”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	usable ceiling
释义	usable ceiling usable ceiling The highest altitude for multiengine aircraft at which the rate of climb is 50 ft/min with one engine throttled back fully. Also called an emergency ceiling.
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