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.
随便看	breath-hold fast spin-echo breath holding breath-holding breath-holding attacks breath-holding spell breath-holding spells breath-holding test breath hydrogen excretion breath hydrogen level breath hydrogen test breathier breathiest breathily breathiness breathing breathing again breathing air breathing air compressor breathing air system breathing apparatus breathing apparatus operator breathing apparatus, self-contained compressed air breathing apparatus support unit breathing apparatus training building breathing a sigh of relief

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