英语词汇“air-track drill”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	air-track drill
释义	air-track drill air-track drill [′er ¦trak ‚dril] (mining engineering) A heavy drilling machine for quarry or opencast blasting, equipped with caterpillar tracks and operated by independent air motors.
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