英语词汇“free area”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	free area
释义	free area free area The total minimum area of the openings in an air inlet or outlet (e.g., air diffuser, grille, or register) through which air can pass; usually expressed as a percentage of the total area.
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