One of the most important geophysical techniques is core drilling, which is carried out with a hollow cylinder through subsurface layers to obtain samples of rocks.
岩心钻探是最重要的地球物理勘探技术之一。进行钻探时，用一根空心管穿过地表下层获取岩石样品。
Diamond coring bits are utilized for core drilling.
在取芯钻井井段，选用金刚石取芯钻头。
This paper discusses the procedures of DTH hammer and core drilling with casing.
本文主要论述了空气潜孔锤跟管取心钻进规程。
This paper describes and summarizes the core drilling process and the technical measures.
文章介绍并总结了该项目岩芯钻探钻孔施工工艺与技术措施。
This machine can be used drilling, core drilling, reaming, boring, tapping, spot-facing and chamfering etc.
可以进行钻孔、扩孔、铰孔、镗孔、攻丝、锪平面，倒角等工作。
To use different core drilling method in different geological environments can ensure the smooth progress of geological exploration work.
在不同的地质环境中，使用不同的岩心钻进方式，可以保证地质勘探工作的顺利进行。
The core drilling method and the obtained achievement are introduced with respect to the bit and core barrel used in different formation.
根据不同地层所采用的钻头和取心器，介绍了不同地层的钻进取心方法和取得的成果。
The evidence comes from everything from core drilling to medieval financial records newly uncovered from state archives in Istanbul and Italy.
所展示的证据来源广泛，从岩心钻探到在伊斯坦布尔和意大利的国家档案馆新发现的中世纪财政记录。
This project will reveal clues to how the mountains were formed and provide scientists with the best location for future ice core drilling campaigns.
这个项目将揭示甘毕采夫冰下山脉的形成线索，为科学家们将来进行取芯钻探活动提供最佳位置。
In view of such a problem, the lithological electrical parameters in Archie formula were calibrated by use of the analysis data of sealing core drilling.
文章针对这一问题，利用密闭取心分析资料对阿尔奇公式中的岩石电学参数进行了刻度。
This method properly determined the sample quantity to make core drilling amendment with the confidence degree and precision estimate theory of error theory.
在该方法中，利用误差理论中的置信度和估计精度理论，合理确定钻芯修正所需要的芯样数量。
The description covers full-hydraulic core drilling machines, portable drills, geo-thermal drills, offshore and beach sampling equipment, all-casing drilling rig, etc.
介绍的主要设备有全液压岩心钻机系列、轻便设备系列、地源热泵钻机、浅海及滩涂取样钻机、全套管钻机等。
Taking the oil well drilling and geological core drilling for examples, the recent advances of drilling technology at the beginning of the 21st century are briefly described.
以石油钻井和地质岩心钻探为例，论述了进入21世纪后，石油钻井和地质岩心钻中钻探技术研究与应用的新进展。
For the buried minerals geophysical techniques are used to get information. For example, seismic technique and core drilling are often used. These techniques are the most important in prospecting.
对那些深埋的矿物，就用地球物理勘探法来获取资料，如常用的地震勘探技术和钻取岩心法。这些技术对于找矿是最有用的。
Permian system in Tazhong area may be divided into three lithology groups: lower clastic group, volcanics group and upper clastic group based on the data of core, drilling, logging and so on.
前言：依据岩心、钻井、测井等资料，将塔中地区二叠系分为三个岩性组：下碎屑岩组、火山岩组、上碎屑岩组。
For bedrock drilling ordinary hard alloy driller can be adopted for vertical core-drilling with the addition of clear water during rotation. for overburden dry drilling process can be adopted.
基岩钻探方法以采取普通硬质合金清水回转垂直取心钻进，覆盖层采用干钻。
This research was done on the tensile behavior of high performance cement-mortar to concrete through core-drilling and pull-stripping test.
研究了高性能水泥复合砂浆与混凝土之间的粘结性能。
Factors that influence the selection of compressive samples for core-drilling test of piling foundations are introduced and analyzed and methods to select the samples are provided in the paper.
介绍桩基础钻芯检测法抗压芯样选取方法的影响因素，并对各个因素进行分析，提出桩基础钻芯检测法抗压芯样的具体选取方法。
Factors that influence the selection of compressive samples for core-drilling test of piling foundations are introduced and analyzed and methods to select the samples are provided in the paper.
介绍桩基础钻芯检测法抗压芯样选取方法的影响因素，并对各个因素进行分析，提出桩基础钻芯检测法抗压芯样的具体选取方法。
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