As we know, inclining drilling, the depth of drilling and rock hardness is three factors influencing drilling production efficiency and cost.
钻孔偏斜、孔深、岩石硬度被公认为是影响钻探生产效率与成本的三大要素。
It is indicated that there is the best correlation between rock indentation hardness and integrated RMS of AE events.
结果表明：岩石压入硬度与声发射信号的积分rms有最好的相关关系。
It is possible to use the parameter integrated RMS to assess rock indentation hardness and further to predict rock drillability.
有可能利用积分rms这一参数来估价岩石压入硬度，并进一步预报岩石可钻性。
PCB series crusher is used for breaking medium degree of hardness materials, such as brittle ore, rock, coal limestone, slag, etc. in chemicals, cement, building materials and electricity industries.
PCB系列锤式破碎机可供化工、泥、材、电等工业部门做中碎或细碎各种中等硬度以下的脆性矿山、石和煤、灰石、渣等。
Through compaction hardness and analog shear rock failure test to drilling core, the paper discusses the possibility of discriminating downhole rock type by using rock acoustic emission frequency.
通过对钻井取心岩样压入硬度及模拟剪切的破岩试验，探寻利用岩石的声发射频率来判别井下岩石类型的可能性。
Insert tooth bit applies in every serious geography especially hard rock; it has stable drilling speed and can drill the hardness of rock at 1-6 grades.
镶齿牙轮钻头主要适用于地质较硬的岩层，它钻进速度稳定，可以钻进1-6级地质硬度，适用于各种恶劣的地质环境。
Section emphases:mechanics nature of rock and the affecting factor, hardness and plasticity evaluation and its application.
本节重点：岩石的力学性质及其影响因素，硬度与塑性的评价及其应用。
The equipment was heavily damaged due to wearing of the quartz-clastic rock with high strength, high hardness and great content of SiO_2.
由于石英碎屑岩的强度高、硬度大和二氧化硅含量高，造成机械加工设备磨损严重。
This series crusher applies to crush all kinds of ore and rock over middle hardness.
本系列破碎机，适用于破碎中等以上硬度的各种矿石和岩石。
It is formed from liquid magma, the molten rock still found at the core of the planet, cooled slowly to form a substance approaching the hardness and durability of diamond.
花岗岩是有地球内部的岩浆冷却行程得一种硬度和耐久性接近钻石的物质。
For the hardness in building force reduction pool bottom on soft rock and soil, the paper made a discussion on the construction technique and the quality control method of the concrete bottom.
针对在软基上修建消力池底板难度大的特点，阐述了混凝土板的施工技术及质量控制方法。
The result shows that the hardness of rock is the key factor that decides whether sanding or not.
研究表明，岩石强度是决定储层是否出砂的决定性因素。
Furthermore, hardness, plastic coefficient and elastic coefficient have also been introduced in this model to describe the rock nature in con...
并在该模型中用岩石硬度、塑性系数和弹性系数来反映岩石的力学性质，从而使模型具有较宽的应用范围。
Furthermore, hardness, plastic coefficient and elastic coefficient have also been introduced in this model to describe the rock nature in con...
并在该模型中用岩石硬度、塑性系数和弹性系数来反映岩石的力学性质，从而使模型具有较宽的应用范围。
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