“chopping bit”的概念、定义、翻译、参考文献-科学参考

单词	chopping bit
释义	chopping bit [`chäp·iŋ ´bit] ^{MECHANICAL ENGINEERING} A steel bit with a chisel-shaped cutting edge, attached to a string of drill rods to break up, by impact, boulders, hardpan, and a lost core in a drill hole. Also known as chisel bit.
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