The experimental result draws hole degree and permeability in the normal atmospheric temperature atmosphere is deferent because of the different rock specimen.
实验结果得出由于选用不同性质的岩样，测试出岩样在常温常压下孔隙度存在差异。
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.
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。
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