1) core bit wing
刮刀取心钻头的刀翼
2) quadruple-wing drag bit
四翼刮刀钻头
1.
So Benoto Method,reverse circulation drilling with quadruple-wing drag bits,drilling with roller-type cutting head and combined drilling technology was adopted as well as wall protection with mud,which is strictly districted in Hongkong and Macao.
根据工程的具体情况,采用贝诺特工法、反循环四翼刮刀钻头钻进、滚刀钻头钻进等组合钻进工艺,同时采用在港澳地区限制严格的泥浆护壁钻进。
3) bit wing
刮刀钻头的刮刀片
4) 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。
5) blade
[英][bleɪd] [美][bled]
钻头刮刀
6) 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。
补充资料：变后掠翼飞机(见后掠翼飞机)
变后掠翼飞机(见后掠翼飞机)
swing-wing aircraft
bianhoul位eyi feiii变后掠翼飞机(swing一wing aircran)见后掠翼飞机。
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