Error of testing table is also analysed.
对试验台的误差进行了分析。
In this paper, the situation and data in the test on testing table are presented, which are compared with those of three cone bit, obtaining an important result in applying this kind of bit.
文中介绍了在试验台上的试验情况和数据，并与三牙轮钻头进行了比较，得出了应用该钻头的重要结论。
In this paper, the situation and data in the test on testing table are presented, which are compared with those of three cone bit, obtaining an important result in applying this kind of bit.
文中介绍了在试验台上的试验情况和数据，并与三牙轮钻头进行了比较，得出了应用该钻头的重要结论。
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