1.
balancing centering machine
平衡-钻中心孔机床
2.
spotfacing and centering machine
平端面钻中心孔机床
3.
Make Use Guide Drill Case Drill a Hole Lead to of Deviate Heart of a Drill
使用导向钻套钻孔引出的中心偏移问题
4.
adjustable jaws center workpiece in a lathe or center tool in a drill.
在车床或钻孔机中心工具内的可调整中心工件。
5.
A. Position the bores according to the product. Drill φ 6 bores respectively with impact driller, after the center line for bolt bore is drawn in the appropriate position on the wall.
根据产品安装孔位，在墙面相应位置画出螺钉孔中心线后，用冲击钻分别钻φ6孔。
6.
Tool shanks and draw-in must have a central through bore.
刀柄和引入轴必带一个穿过钻孔的中心点。
7.
Research on Deep Hole Wire Line Core drilling Tech.in Complicated Stratum
复杂地层中深孔绳索取心钻探技术研究
8.
Discussion on the Diameter of Main Section in Medium-shallow Hole in Diamond Core Drilling for Geological Exploration
地质勘探金刚石岩心钻探中浅孔主体口径探讨
9.
Study and Application of High Wear-resistance Drilling Rod for Wire-line Coring in Medium-deep Inclined Hole
中深斜孔绳索取心高强耐磨钻杆的研究与应用
10.
combination center drill
组合中心钻，复合中心钻
11.
A small conical hole made in a piece of work with a center punch so that a drill can be accurately positioned within it.
中心孔，转柄孔在带中心冲头的工件上为使钻头准确放置而做的小锥形孔
12.
Development of core drill equipment for combined underwater drill rammer of rock built-in pile hole
嵌岩桩孔组合潜孔锤取心钻具的研制
13.
Experiment Research of the Drill Fracture Criterion in Inclined Hole Drilling
斜孔钻削中钻头折断的判据实验研究
14.
Insert a self-tapping screw into the drilled pin and carefully pull the pin from the camshaft.
插入自动攻丝螺丝到钻孔的销中，小心地在凸轮轴中拉动销。
15.
On application of DTH drill in drilling pile construction in karst developing areas
潜孔钻在岩溶发育地区钻孔桩施工中的应用
16.
Drill a 12-mm (1/8-in) diameter hole in the top center of the fan shrou
在风扇围板顶部中心钻一个直径12毫米（1/8英寸）的孔。
17.
Application of Wireline Core Drilling in Coalfield Ultra Deep Boreholes
绳索取心钻进技术在煤田勘探超深孔施工中的应用
18.
Selection of Core Drilling Method for WFSD-2 of Wenchuan Earthquake Scientific Drilling Project
汶川地震科学钻探二号孔取心钻进方法的选择