roller bit的意思|示意

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。

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 failure analysis of the high speed roller bit bearing.

高速牙轮钻头轴承的失效分析。

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。

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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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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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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