介绍了单阶梯尖环齿钻头的结构特点及碎岩特点。
This paper introduces the 'structure characteristics and rock fragment characteristics of single step drill head with point pick.
本文用平面光弹方法，对阶梯金刚石钻头切削刃下岩石的应力进行分析。
Rock cutting by a step ped bit has been studied with experimental stress analysis and is tested under atmospheric pressure.
本文用平面光弹方法，对阶梯金刚石钻头切削刃下岩石的应力进行分析。
Rock cutting by a step ped bit has been studied with experimental stress analysis and is tested under atmospheric pressure.
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