麻花钻（twist drill ）：主要由柄部和工作部组成。工作部的切削部有两个主切削刃和副切削刃，两个前面和后面，两个刃带和一个横刃组成，担负全部切削...
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fluted twist drill [机] 麻花钻
subarachnoid twist drill 蛛网膜下旋钻
straight shank twist drill 直柄麻花钻 ; 无头钢钻
flat twist drill 平底麻花钻
guide twist drill 有导径的深孔麻花钻
taper-shank twist drill 锥柄麻花钻头
twist drill grinder 螺旋钻头磨床 ; 麻花钻磨床
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N a drill bit having two helical grooves running from the point along the shank to clear swarf and cuttings 螺旋钻
Most drilling in metal is done with a twist drill.
大多数金属钻孔用的是麻花钻头。
The twist drill may be divided into three principal parts:shank, body and point.
麻花钻也许可以被划分成三个主要的部分：钻柄、钻体和钻尖。
How to machine twist drill high efficiently and high precisely is a problem to discuss.
如何高效、高精度地加工出合格的麻花钻一直是在探讨的问题。
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