英语词汇“pneumatic injection”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	pneumatic injection
释义	pneumatic injection pneumatic injection [nu̇′mad·ik in′jek·shən] (mining engineering) A method for fighting underground coal fires, developed by the U.S. Bureau of Mines; this air-blowing technique involves the injection of incombustible mineral, like rock wool or dry sand, through 6-inch (15-centimeter) boreholes drilled from the surface to intersect underground passageways in the mines.
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