单词	air door
释义	air door air door n. A strong, temperature-controlled current of air, usually directed upward, that is used instead of a door. air door air door [′er ‚dȯr] (mining engineering) A door placed in a mine roadway to prevent the passage of air. air curtain air curtain or air door A stream of high-velocity temperature-controlled air which is directed downward, across an opening; excludes insects, exterior drafts, etc.; prevents the transfer of heat across it, and makes it possible to air-condition a space having an open entrance; used in exterior doors, on loading platforms, etc.
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