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- Application of Boronization Technique to Three Roller Bit 渗硼技术在三牙轮钻头上的应用
- three roller bit 三牙轮钻头
- Gelatinize can take three roller gelatinize or reseaus-coating. 涂胶可拔取不一辊式涂胶，也可拔取网纹辊涂胶。
- Also, the nozzles fitting in three roller bits for oilwell drilling have been developed with hard alloy materials. 用硬质合金为主要材料研制出了石油钻井用自振空化射流喷嘴。
- It is summarized and analyzed the strength characteristic of andesite and the principium of destroying rock of roller bit,take andesite for example. 以安山岩为例,总结和分析了安山岩的强度特性以及组合牙轮钻头的破岩机理。
- Upgrading of single roller ironer to double roller or double roller to three roller ironer can be easily carried out at site. 其前、后辊组件结构非常接近，经过简单改造即可实现随意组合，在用户现场就可以从单辊升级到双辊，从双辊升级到三辊。
- Curve down three roller coiling machine is a new equipment grown up recent years, of which application domestic is not so optimistic. 弧线下调式三辊卷板机是近年发展起来的一种新型设备,在我国的使用状况却不容乐观。
- The operating performance quality of the roller bit, which is the most main broken crag tool, directly influence the well drilling quality, well drilling efficiency and well drilling cost. 牙轮钻头是钻井工程中最主要的破岩工具，其工作性能的好坏直接影响钻井质量、钻井效率和钻井成本。
- The construction of this machine is the form of three roller symmetry, The top roller, in the centre symmetry position over the two botton roller, does vertical motion up and down through screw, nut and worm transmission. 本机结构型式为三辊对称式，上辊在两下辊中央对称位置做垂直升降运动，通过液压缸内的液压油作用于活塞而获得，为液压传动；两下辊做垂直运动，通过减速机的输出齿轮与下辊齿齿合，为卷板机提供扭矩。
- In order to solve the forming problem in backbridge half shaft casing,the authors adopt fissional structure in designing and develop a new technology using three roller cross rolling principle. 为解决轻型车后桥半轴套管成形难的问题,在产品设计上采用了分体式结构,并研究开发了三辊横轧新工艺。
- At the same time, also has electric Daozha, remote control garage doors, electric Zhedie Men, electric flagpoles, intelligent three roller gates, and other types of mechanical and electrical products. 同时，还拥有电动道闸、遥控车库门、电动折叠门、电动旗杆、智能三辊闸等多种型号的机电产品系列。
- The Computer Simulation Model of Three Roller Cone Bit 三牙轮钻头的计算机仿真模型
- Study of Single Spherical Roller Bit 单牙轮钻头研究
- STUDY ON BELLEVILLE RING SEAL OF ROLLER BIT 牙轮钻头碟形圈密封的试验研究
- Keywords drillability;logging data;roller bit; 可钻性;测井资料;牙轮钻头;
- Mechanical Three Roller Symmetrical Bending Machine 三辊机械对称式卷板机
- It's a bit much ringing me up at three o'clock in the morning. 凌晨三点钟就打电话来，太不像话了。
- I've been abroad three times this year. I get about quite a bit. 今年我已经出国三次了，我走的地方相当多。
- He trudge three hour in the snow to get back home. 他在雪中跋涉三个钟点才回到家。
- Sealing mechanism of metal face seals for roller bit 牙轮钻头单金属浮动密封结构的密封机理
