• 1. roller bit: 牙轮钻头 | 旋转钻头 | 滚轮式钻头 | 轮钻牙头
• 2. rock roller bit: 牙轮钻头
• 3. three roller bit: 三牙轮钻头

更多释义

• 1.The failure analysis of the high speed roller bit bearing.
  高速牙轮钻头轴承的失效分析。
  dict.yoduao.com
• 2.In this paper, on the basis of the results obtained from the bench and field tests of the three roller bit, its improving direction is approached.
  本文以三牙轮钻头的台架试验和油气田现场试验的效果为依据，探讨三牙轮钻头的改进方向。
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• 3.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。
  dict.yoduao.com

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