查询词典 drill bit

This means you'll need to get out that 1/32 bit again and drill holes for the new rungs.

这意味着您需要获得指出， 1 / 32位，再次与孔为新梯矢。

Change the drill to a3.0-mm bit. The C2 spinous process was pushed entrally to achiee ideal reduction.

将钻换成3.0mm。将C2棘突向腹侧推以达到理想复位。

It has to be tall because it is like a giant block tackle, we have to lower into the ground haul out of the ground great lengths of drill pipe which are rotated by an engine at the top are fitted with a cutting bit at the bottom.

井架必须 ssbbww。 c om 很高， 8 Tt t 8。 com 它像一个巨型滑轮组。 sSBbWw 必须 ssbbww。 c om 把很长的钻杆一节节地钻入地下， 8ttt8.com 再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。

Some experimental results are shown. According to the results, using tricorn bits assembled the SEOPYN to drill oil well, the ROP increases by 8%～77%, and the rates of the footage for trienrn bit increases by 6.7%～44.0%.

本文在稳态brush轮胎模型基础上，通过印迹前端蹼处胎冠一阶变形模型，建立了轮胎制动力－滑移率的动态模型，并根据转鼓试验台上的轮胎制动试验，验证了该模型的仿真效果。

C. With a 1-1/2 spade bit drill holes into 2x4 yellow pine for one battery pack discharge.

使用 1-1/2 铲形钻咀，於 2x4 黄松木上钻孔，一个电池包。

The Donor boom tube was mitered using a Drill with a hole saw bit sized to fit head tube.

捐助热潮管mitered使用钻了孔位看到适合中小企业负责人管。

In order to meet oilfiled urgent need and in terms of the effective technique way of control bit side force, a flexible deviation control and hole straightening drill assembly is designed by combining error control with perturbance control in the dissertation.

应现场的迫切要求，本文根据控制钻头侧向力的有效技术途径，按扰动控制和按偏差控制结合的方式，设计了柔性防斜纠斜钻具。

As for the air percussive rotary drilling, because of its advantages of high ROP, long bit life, light WOB, reduced wear of drill collar, large cuttings, low drilling cost, low formation damage and no lost circulation, it has gained acceptance.

空气冲击回转钻井在一些特定的地层和井眼条件下具有高机械钻速、长钻头寿命、小钻压、较轻钻具磨损、大岩屑、低钻井成本、较轻油层污染和避免井漏等优点，因此很早就被钻井界接受。

The optimization of hydraulic structures for PDC drill bits is an effective means to control the generation and development of bit balling.

对PDC钻头水力结构的优化是控制泥包生成和发展的有效手段。

Its unique feature is that concentrate energy to directly drive bore bit on breaking rock, and energy is sufficiently utilized, drill speed is fast and well bore is well.

其主要特点是将能量集中在井底直接驱动钻头破岩，能量利用充分，机械钻速较高，井身质量好。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。