roller bit

In a bit of medical research inspired by strange and remarkable patient accounts, a Michigan State University urologist reports that, yes, riding a medium-intensity roller coaster such as the Disney theme parks" Big Thunder Mountain Railroad can result in the painless passing of small, and even a few large, kidney stones.

密歇根州立大学的泌尿专家注意到了一些罕见病例，受其启发进行了医学研究。他们得出报告说，是的，玩一趟中等刺激的过山车，比如迪士尼乐园的巨雷山过山车，能无痛排出小粒甚至是一些大颗肾结石。

Carbide welded taper shank core drill cone type roller bearing rock bit

硬质合金焊接式锥柄扩孔钻滚柱轴承锥形牙轮钻头

A Study on the Wearability of the Materials for the Sliding Bearing in a Roller Bit By Orthogonal Experiment

牙轮钻头滑动轴承材料磨损性能的正交试验

This paper introduces the application of the object-oriented technology in three roller bIt'simulation.

本文介绍了 面向对象 技术在三牙轮钻头仿真中的应用.

Wear-resistant Properties of Plasma Sprayed WC-Co Coating On the Roller Bit Metal Seal Ring Surface

牙轮钻头金属密封环表面喷涂WC-Co涂层耐磨性研究

Study of Single Spherical Roller Bit

单牙轮钻头研究

The primary investigation of the sealing system of the high speed roller bit bearing.

高速牙轮钻头轴承密封系统的初步研究.

The investigation directions of the high speed roller bIt'sealing are put forward in the future.

针对这些情况提出高速牙轮钻头轴承密封在今后的研究方向.

Cone type roller bearing rock bit The tapered gear box and universal shaft transmit smooth power and are simple to assemble and disassemble.

滚柱轴承锥形牙轮钻头锥齿轮箱＋万向轴动力上台，传动可靠，装拆方便。

Study and application of the hydraulic system of three roller bit

三牙轮钻头水力系统的研究与应用

Research Progress of the Surface Strengthening Technology on Roller Bit Metal Face Seal

牙轮钻头金属端面密封表面强化技术研究进展

Principle, an early warning device was installed in the original bearing housing of roller bit in the new technique.

新技术利用摩擦自锁原理，将一个预警装置设置在原有牙轮钻头的轴承腔内。

The high-speed roller bit bearing surface strengthening technology

高速牙轮钻头轴承表面强化技术实验研究

Study on Roller Bit Rock-Breaking Power in Vertical Wells

直井牙轮钻头碎岩功率研究

A modern design method, by which computer aided optimum design is used through the whole process of roller bit design, is introduced in this article.

介绍一种牙轮钻头的现代设计方法。设计过程全部使用计算机辅助设计和优化设计。

A Discussion on Improving the Seal of Roller Bit Bearing

改进牙轮钻头轴承密封的探讨

The parameterized solid modeling of the teeth of the roller bit based on Pro/ E

基于Pro／E的牙轮钻头牙齿参数化造型设计

Improving Direction of Three Roller Bit

三牙轮钻头的改进方向

Experimental study on self excited resonant pulse jet nozzle for roller bit

牙轮钻头自激振荡脉冲喷嘴的实验研究

Mechanical Properties for Sliding Bearing Materials of Roller Bit

牙轮钻头滑动轴承材料的力学性能试验

Study on Belleville ring seal of roller bit circle of friends

牙轮钻头碟形圈密封的试验研究

Construction of Mechanics Analysis System for Bearing of Roller Bit-Contact Stress Analysis of the Rollers

牙轮钻头轴承力学分析系统的构筑&滚动轴承滚子接触应力分析

A new criterion for failure of sliding bearings in roller bit

度量牙轮钻头滑动轴承粘着磨损失效的新准则

The large circular-arc drum-shaped roller bearing has the ability of adjusting the tilting of its axis to the axis of the leg and cone of a tricone bit, and is characterized by lower actual contact pressure, large load carrying ability and long service life.

大圆弧鼓形滚子轴承对牙轮牙爪轴的轴线相互倾斜具有调节功能，因此实际接触应力相对较低，承载能力高，寿命长。

Crack Analysis in Palm of Roller Bit by Overlaying Welding and Heat Treatment

牙轮钻头牙掌焊接和热处理产生的裂纹分析

The failure analysis of the high speed roller bit bearing.

高速牙轮钻头轴承的失效分析.

The coupling function analysis of the thread-locking ring of rock roller bit

牙轮钻头螺纹锁紧环连接性能影响分析

Large circular-arc drum-shaped roller bearing for cone bit

牙轮钻头大圆弧鼓形滚子轴承设计

The new-type mono-metal floating seal for roller bit

牙轮钻头用新型单金属浮动密封研究

Roller bit tooth measured in the force experiment and wavelet de-noise analysis

牙轮钻头牙齿测力试验中数据的小波去噪分析