英语词汇“positive draft”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	positive draft
释义	positive draft positive draft [′päz·əd·iv ′draft] (mechanical engineering) Pressure in the furnace or gas passages of a steam-generating unit which is greater than atmospheric pressure.
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