1.
The CAD System Development of the Grinding Wheel Cross-sectional Profile Machining the Micro-diameter Drill's Flute;
加工微小直径钻头螺旋槽用砂轮截形CAD系统的开发
2.
Bit Design for Main Pier Bored Piles of Donghai Bridge
东海大桥主墩大直径钻孔灌注桩钻头设计
3.
Method of Calculating Three Cone Bit Diameter by Using Excel
用Excel实现三牙轮钻头直径计算的方法
4.
high efficiency drilling system for small and deep hole
高效小直径深孔钻削系统
5.
Study on the Effect of the Nozzle of Drag Bits on Bottom Hole Flow Field
刮刀钻头喷嘴直径对井底流场的影响研究
6.
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.
7.
The Research of Producing and Test of Jointing Intensity of Small Caliber PDC Bit;
小口径PDC钻头制造与焊接强度检测研究
8.
a small bit that drills a first hole to guide a larger drill.
钻凿初洞来导引大钻头的一种小钻头。
9.
Design and Application of large Diameter Bit in Rock and Soil Drilling
岩土钻探工程大口径钻头设计与应用
10.
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
11.
One micron is a thousandth of a millimeter: a pinhead is about a millimeter across.
一微米等于千分之一毫米。 针头直径大约一毫米。
12.
Signal Processing of Near-Bit Weight on Bit and Torque
近钻头钻压、扭矩测量中微弱信号处理
13.
consists of a number of small lenses arranged to make a lightweight lens of large diameter and short focal length.
由许多小镜头排列以制成大直径短焦距的轻型镜头。
14.
Particulate matter includes particles from molecular size to greater than 10Mm in diameter.
微粒物质包括从分子大小到直径大于10微米的粒子。
15.
The rotary carriage provides rotary and vertical motion to the drill string and bit.
转动滑架为钻柱和钻头提供转动和垂直移动。
16.
Research on the Bearing Performance of the Super-Long and Large-Diameter Bored Pile;
超长大直径钻孔灌注桩承载性能研究
17.
EXPERIMENTAL RESEARCH ON NEGATIVE SKIN FRICTION OF LARGE-DIAMETER BORED PILES
大直径钻孔灌注桩负摩阻力试验研究
18.
Technology of 1000 meter directional borehole at large diameter for mine gas extraction
顶板大直径千米长钻孔抽采瓦斯技术