英语词汇“concave 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	concave bit
释义	concave bit concave bit [′kän‚kāv ‚bit] (design engineering) A type of tungsten carbide drill bit having a concave cutting edge; used for percussive boring.
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