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。

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Study on Roller Bit Rock-Breaking Power in Vertical Wells

直井牙轮钻头碎岩功率研究

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Improving Direction of Three Roller Bit

三牙轮钻头的改进方向

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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

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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

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A Discussion on Improving the Seal of Roller Bit Bearing

改进牙轮钻头轴承密封的探讨

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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

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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

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Study of Single Spherical Roller Bit

单牙轮钻头研究

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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。

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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

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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

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The failure analysis of the high speed roller bit bearing.

高速牙轮钻头轴承的失效分析.

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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

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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

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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

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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.

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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

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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

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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

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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。

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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.

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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

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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.

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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。

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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

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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

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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

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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。

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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

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