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1)  drag rotary detachable bit
拆卸式刮刀钻头
2)  drag bit
刮刀钻头
1.
And this kind of bit combines the advantages of PDC bits and drag bits.
在理论分析的基础上,综合PDC钻头和刮刀钻头的优点,设计了一种新型的刮刀钻头,并进行了现场试验。
2.
With reference to the difficulties encountered during boring construction of foundations of Zhanjiang Bay Bridge, this paper describes and discusses how to improve drag bit to make it adapt to the boring construction in hard plastic clay stratum.
针对湛江海湾大桥钻孔施工的难题,论述如何改进刮刀钻头使之适应硬塑粘土层钻孔施工的需要,通过工程实践证明达到了理想的效果。
3.
The forces which the knives of a drag bit and drilling pipes suffer when drilling are analysed.
分析了刮刀钻头钻进时刀刃和钻具的受力情况;讨论了“蹩钻”的原因和控制办法。
3)  blade [英][bleɪd]  [美][bled]
钻头刮刀
4)  blade bit
刮刀钻头
1.
Aimed at resolve the several problems which affect drilling efficiency, such as balling up and calcareous cementation, the design of blade bits was modified.
针对钻头包泥堵钻和钙质胶结层难以进尺等影响钻进效率的几个问题,对刮刀钻头结构进行了改进设计,并取得了令人满意的效果。
5)  bit wing
刮刀钻头刮刀片
6)  detachable drill head
可拆卸钻头
补充资料:大直径牙轮钻头


大直径牙轮钻头


  大““钻头篡
  
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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