1) counterbore cutter
柱坑钻头
2) farmland pit digging machine auger
坑田机钻头
1.
On the basis of the method of quality reduction and rigidity enforcement, a vibration control of farmland pit digging machine auger was studied.
在自制了旋转件弯曲振动专用夹具的基础上，根据非电量电测技术，试验求得了坑田机钻头减振设计前后钻尖处的振动状态，验证了减振的有效
3) auger-bit
挖坑机钻头
1.
It will beimportant and realistic to study dynamic performance of auger-bit when it works for tree deepplanting, to establish and perfect the dynamic theory systematically under the interactionbetween auger-bit and soil, to clear the.
本文将钻头几何学、运动学、动力学、土壤力学、弹性力学、振动理论、微分方程、数值计算方法、泛函分析、仿真理论及计算机应用技术等科学融合为一体，通过理论分析并结合实验测试，对深植挖坑机钻头与土壤作用系统动力学响应特性进行了系统的研究。
4) straight shank drill
柱柄麻花钻头
5) roller bearing bit
滚柱轴承钻头
6) drilling in pit
坑内钻探
1.
By using drilling in pit,ore reserve classification is increased,risks of underground mining engineering are reduced and avoided.
主要阐述了矿区通过实施坑内钻探,提高储量级别,降低和避免井下采矿工程风险,节约了成本,增加了效益。
补充资料：坑坑坎坎
1.坑坑洼洼，凹凸不平。
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