英语词汇“star drill”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	star drill
释义	star drill (extremely rare) n WORD FAMILY star drill n a steel rock drill with a star-shaped point that is used for making holes in stones or masonry; it is operated by hitting the end with a hammer while rotating it between blows Hyper bore bit, borer, rock drill, stone drill a drill for penetrating rock
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