单词	pneumatic drill
释义	pneumatic drill From Longman Dictionary of Contemporary EnglishRelated topics: Tools, Civilpneumatic drillpneuˌmatic ˈdrill noun [countable]  especially British EnglishTZTEC a large powerful tool worked by air pressure and used for breaking up hard materials, especially road surfaces SYN jackhammer American EnglishExamples from the Corpuspneumatic drill• Minutes later he was making a noise like a pneumatic drill.• Her left arm by her side, her right elbow out at an angle and her forearm shaking like a pneumatic drill.• Perry, in a fishing jacket, moving like a marionette that swallowed a pneumatic drill.• At 100 decibels, the level produced by a chain saw or pneumatic drill, the allowable exposure is three hours.
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