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- The relationship model of cone bit drillability and PDC bit drillablity is created. 建立了牙轮钻头可钻性与PDC钻头可钻性的相互关系模型。
- The main failure patterns of the sliding bearing of a cone bit are gluing and abrasion. 牙轮钻头滑动轴承的主要失效形式是胶合和磨粒磨损。
- Thereby,cut and analysis tothe cutter and cutting face of cone bit will be needed,while the abrative waterjet cuttingmachine can yet be regarded as a desired cutting tool. 用磨料水射流切割牙轮钻头不失为一种理想的切割方法，它与传统切割方法相比，具有工效高、切口质量好等特点。
- The Computer Simulation Model of Three Roller Cone Bit 三牙轮钻头的计算机仿真模型
- Indirectly measuring structural parameters of three cone bit 三牙轮钻头结构参数的间接测量
- STUDY OF SIDE-CUTTING TEST OF ROLLER CONE BIT 牙轮钻头侧切试验研究
- Method of Establishing Cone Bit Solid Model 牙轮钻头实体模型的建立方法
- Emulation research on dynamics of roller cone bit 牙轮钻头动力学特性仿真研究
- The Application of CAD in the Design of Cone Bit CAD在牙轮钻头设计中的应用
- Motion and Force Analysis of Cone Bit 牙轮钻头的运动和受力分析
- Keywords cone bit;nozzel;vacuum diffusion bonding; 牙轮钻头;喷嘴;真空扩散焊接;
- 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。
- 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。
- Our family reunions are always three ring circus. 我家合家团聚的场面总是热闹非凡。
- The train arrived on the dot of three o'clock. 那辆火车三点钟准时到达。
- Her family lives three li away from her school. 她家住在离学校有三里路的地方。
- We spied three figures in the distance. 我们望见远处有三个人影儿。
- The earthwork was cast up in three hours. 土方工程在三小时内就完成了。
- Experimental study of rock breaking mechanism of disc one cone bit 盘式单牙轮钻头破岩机理试验研究
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
