英语词汇“cone rock bit”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	cone rock bit
释义	cone rock bit cone rock bit [′kōn ′räk ‚bit] (mechanical engineering) A rotary drill with two hardened knurled cones which cut the rock as they roll. Also known as roller bit.
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