英语词汇roller bit怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

　

单词	roller bit
释义	Definition of roller bit in English: roller bit noun 1Saddlery a kind of bit with a rotating ball or bead fitted on the mouthpiece. 2Mechanics a drilling bit in which the cutting teeth are on rotating conical or circular cutters, used chiefly in the oil industry. Origin Mid 19th century; earliest use found in Household Words. Definition of roller bit in US English: roller bit noun 1Saddlery a kind of bit with a rotating ball or bead fitted on the mouthpiece. 2Mechanics a drilling bit in which the cutting teeth are on rotating conical or circular cutters, used chiefly in the oil industry. Origin Mid 19th century; earliest use found in Household Words.
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更新时间：2025/1/30 22:23:57