1.
Experiment to Improve Chip Breaking Performance of Drill Tip in Stainless Steel Drilling
不锈钢钻削中提高钻尖断屑性能的试验研究
2.
a steel drill with a star-shaped point that is used for making holes in stones or masonry; it is operated by hitting the end with a hammer while rotating it between blows.
用于石器或石匠术钻孔的有星形钻头的钢钻；通过锤子的敲击来工作，两次敲击之间旋转。
3.
Improvement of Drill Point Geometry for Drilling High Manganese Steel ZGMn13;
钻削高锰钢ZGMn13钻头刃形改进研究
4.
Study on Carbide Drill Used to Drill ZGMn13 Turnout;
钻削ZGMn13高锰钢道岔硬质合金钻头研究
5.
hand churn drill
手动钢绳冲击式钻机
6.
They were drilling Boles in a steel plate
他们在钢板上钻孔。
7.
In a minute Jimmy's pet drill was biting smoothly into the steel door.
不一会儿，吉米心爱的钻头已顺利钻进了钢门。
8.
In a minute Jimmy's pet drell was biting smoothly into the steel door.
不一会儿，吉来心爱的钻头已顺利钻进了钢门。
9.
This is jet bit and that is a PDC bit.
这是喷射式钻头，那是人造聚晶金钢石钻头。
10.
Experimental Research on Carbide Drill with Multi-facet for ZGMn13 High Manganese Steel
硬质合金群钻钻削ZGMn13高锰钢的实验研究
11.
Experimental Research on Dry Cutting of Carbide Drill with Multi-facet for ZGMn13 High Manganese Steel
硬质合金群钻钻削ZGMn13高锰钢干切削实验研究
12.
Combined Application of Steel Casing by Vibrating Hammer and Rotary Drilling Rig
振动锤沉拔钢护筒与旋挖钻机钻进的组合应用
13.
Collapse Test Research on Baosteel-made Ф139.7 mm×7.72 mm P110 Casing for Well-drilling Service
宝钢Ф139.7mm×7.72mm P110钢级钻井用套管挤毁试验研究
14.
Drag bits are used most commonly in soft formations.
在松软岩层中最常用的是钢砂钻头。
15.
In a minute Jimmy's drill got into the steel door.
没过多大一会儿，基米就钻透了钢门。
16.
Seamless steel tubes standard use diamond core drilling
GB3423-1982金刚石岩心钻探用无缝钢管
17.
The hole was lined with a steel tube to prevent the walls from falling in.
用一根钢管给钻孔加衬，以防井壁坍塌。
18.
Construction of Bored Piles in Double wall Steel Cofferdam for the Second Changjiang River Bridge in Wuhan
武汉长江二桥双壁钢围堰钻孔桩施工