英语词汇concave 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	concave bit
释义	concave bit 简明释义凹形凿网络释义 1 [木]?凹形凿凹形凿 2 [机]?凹形钻头凹形钻头 3 ?凹面钻头凹面钻头短语 1 concave inward bit 中心凹陷形钻头双语例句 1 So the axial force is reduced, the fixing centre of the concave bit is stable and the concave bit has a long lifetime. 从而减小了轴向力，使钻头定心稳、寿命长，提高了钻削速度和工作效率。
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