bit penetration

用法例句

Since the inception of this project in1998, three pre-pilot holes have been completed and the main hole has reached a depth of over3500 m.

从98年开始，已经完成3个预先导孔的钻探工作，主孔钻进深度已经超过3500米。

deepwater drilling

深水钻进、深海钻进

CONSTRUCTION SCHEDULE ADVANCEMENT OF DRILLING PILE BY DEEP HOLE WATER PRESSURE BLASTING

采取深孔水压爆破提高钻孔桩施工进度

Study on drill bit for large diameter core drilling of deep hole in hard rock

硬岩深孔大口径取芯钻进的钻头研究

Determining the Maximum Depth Method for Complex Formation Pneumatic DTH Drilling with the Casing

复杂地层气动潜孔锤跟管钻进最大深度的确定方法

Discussion on full face pull construction technology of the deep mine shaft drilling method

深立井钻井法全断面一次钻进施工技术的探讨

Determination of Safe Window of Drilling Fluid Density for Deepwater Drilling

深水钻井安全钻井液密度窗口确定方法研究

Study on High Speed Drilling in Deep 38CrMoAl Steel Tube;

38CrMoAl料筒高速深孔钻进研究

The tooth marks depths′s finite element analysis of power slip in deep well drilling

深井钻井中动力卡瓦对钻杆造成的牙痕深度的有限元分析

Keep abreast of with the times you, will surely understand the fascination of be awed person of diamond deeply.

与时代并进的你，必能深深领会钻石的慑人魅力。

Experimental Study on Advanced Treatment of Drilling Wastewater by O_3/H_2O_2

钻井废液的O_3/H_2O_2深度氧化处理研究

4.12 When 20" casing depth is attained, displace hole volume with high viscosity mud.

钻达20英寸套管深度时，用高粘度泥浆替满井眼。

RESEARCH ON A MATHEMATICAL MODEL OF DEEP-WELL DRILLING PROCESS CONTROL BASED ON WEARING FUNCTION OF DRILL BIT

基于钻头磨损函数的深井钻进过程控制数学模型的研究

The max. depth of drilling is about 50 times of drill tools dia and have to see material for drill specially size.

本机种钻孔深度以钻头直径50倍为标准,特殊规格需视加工材质定.

When drilling deep holes, the feed movement should be released from time to time.

在钻深孔的时候，有时必须放松进给运动。

and the search for oil has done more to improve deep drilling,

寻找石油对改进深孔钻探作的贡献很大，

Men are now also drilling the cold, deep North Sea.

现在人们在寒冷的深海上也在进行钻探。

Application of Air-lift Reverse Circulation Drilling in Baoli ZK3 Deep Geothermal Well of Guizhou

气举反循环钻进技术在地热深井施工中的应用