twist drill是什么意思

网络释义

用法例句

It is con- sidered revolving drilling technique is one of the most effective methods to solve the problem of hard strata drilling in deep well and has good applying prospects.

旋冲钻井技术被认为是解决深井硬地层钻井难题的最有效方法之一,具有良好的应用前景。

The Dynamic Analysis on Drilling System of ZY-200 Type Rotary Drilling Rig;

ZY-200型旋挖钻机钻挖系统动力学分析

The Structure Analysis and Welding Technology Research for the Mast of NR220 Rotary Drilling Rig;

NR220旋挖钻机桅杆结构分析及焊接工艺性研究

Simulation analysis of the lifting force of parallelogram cylinder of the parallelogram system of rotary drilling rig based on ADAMS

以ADAMS为平台的旋挖钻机变幅机构变幅油缸举升力仿真分析

The impact-rotary drilling technique and its tendency;

液动冲击旋转钻井技术及其发展趋势

The developing trend and inherent drive force for rotary drilling are pointed out.

对油气钻井的关键技术、理论基础及多学科的交叉特点进行了阐述 ,指明了旋转钻井的发展趋势与内在动力 ,并对 2 1世纪油气钻井技术进行了展望。

Based on analysis of application prospects of rotary drilling in petroleum drilling, this paper presents the structure and working principle of the new hydraulic kicker.

在分析了冲击旋转钻井技术在石油钻井中的应用前景的基础上，介绍了新型液动冲击器结构及工作原理；并根据往复泵的能量方程推导了液动冲击器的单次冲击功、能量利用率和冲击频率的计算公式，并利用实测数据进行了验证。

The Dynamic Analysis on Drilling System of ZY-200 Type Rotary Drilling Rig;

ZY-200型旋挖钻机钻挖系统动力学分析

The Finite Element Analysis on Support Frame Machine of NR22 Type Rotary Drilling Rig;

NR22型旋挖钻机钻挖支撑机构有限元分析

Turns on Lathe Digs Drilling Machine Construction Drill Hole Filling Pile Craft to Discuss

旋挖钻机施工钻孔灌注桩的工艺探讨

Dynamic Analysis on Tunneling Support System of the ZY-220 Rotary Drilling Rig;

ZY-220型旋挖钻机钻挖支撑系统动力分析

Mechanism of Efficient Rock Cracking and Its Engineering Application of Rotary Drilling Rig

旋挖钻机高效入岩机理及其工程应用

Application of Combination Construction Method with Rotary Drilling Rig and Rotary Table Rig

旋挖钻机与转盘钻机组合施工法的应用

The Finite Element Analysis of Mast of NR22 Rotary Drilling Rig;

NR22型旋挖钻机桅杆有限元分析

Study on 2-axis inclinometer based on CANBUS for rotary drilling rig

旋挖钻机用CANBUS双轴倾角传感器的研究

Rotary drilling rig with multiple work method YTR80

YTR80多工法旋挖钻机结构及特点分析

Research on Energy-saving Control of Piling System of Hydraulic Piling Rig;

旋挖钻机钻孔作业系统节能控制的研究

Construction Methods for Rotary Excavating Drilling Machine for Pile Foundation of Weak Geological Layer

软弱地质层桩基旋挖钻机钻孔施工工法

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

The Structure Analysis and Welding Technology Research for the Mast of NR220 Rotary Drilling Rig;

NR220旋挖钻机桅杆结构分析及焊接工艺性研究

FEA of the Leader of the Rotating Drilling Rigs and Probe into the Reliability;

旋挖钻机立柱的有限元分析及可靠性探讨

Structure Dynamic Analysis of Key Parts of Large-scale Piling Rig;

大型旋挖钻机关键部件的结构动力分析

On application of rotary drilling rig in foundation holes of bored piles on bridges

旋挖钻机在桥梁混凝土灌注桩成孔中的应用

Application of Rotary Drilling Rig in Different Strata of Yongning River Bridge

旋挖钻机在永宁河特大桥不同地层中的应用

The application of spin dig drill machine in the pile foundation construction in loess region

旋挖钻机在黄土地区桩基施工中的应用