1) twisted shell bit
螺壳木钻头
3) solid center bit
木工钻头
4) spiral bit
螺旋钻头
1.
The bionics theory was applied on the spiral bits,and then a non-smooth spiral bit was designed and processed for carried out the problem of serious sticking.
将仿生非光滑理论应用于螺旋钻头设计上,以解决粘性土钻进中螺旋钻头阻力大、粘附严重的难题。
5) tap drill
螺孔钻头
6) spiral drill
螺丝钻头
补充资料：木钻
1.木制穿孔工具。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条