这样允许钻头围绕岩石的中心圆柱体钻进，并通过钻头进入取芯桶。
This allows the bit to drill around a central cylinder of rock, which is taken in through the bit and into the core barrel.
通过对某高桩码头横梁裂缝深度的超声检测、骑缝取芯验证，说明对于活荷载引起的结构性裂缝，由于卸载后裂缝重新闭合，超声法检测存在局限性。
The ultrasonic method is unfit for inspecting the depth of crack originated from live load, since the crack will close after the load is removed.
通过对在钢筋混疑土、花岗岩等建筑物上钻孔特点的分析，本文设计了一种新型的取芯式薄壁金钢石钻头。
A new type of thin-wall diamond core drill bit is developed through the analysis of drilling feature on the r.
通过钻井取芯、测井、投产表明，稠油加密井部分已被蒸汽水水淹。
Coring, logging and production of infill wells demonstrate that some heavy oil infillers have been watered out by steam condensated water.
施工完成后，通过开挖探坑、取芯等检查，防渗墙接头、墙体质量均符合要求。
The inspection of completed impervious cores through excavating exploratory pits and core extraction shows that the quality of the impervious core body and its joints meets the design requirements.
表明通过采用现场钻取的芯样试件做车辙试验来检测沥青面层的抗车辙性能的想法是可行的。
Resulted that use drilling core sample in the rutting test, can be used to detect the site asphalt pavement anti-rutting performance.
通过在试验区块的运行，与相关的密闭取芯资料对比，确定可动剩余油的饱和度的误差范围。
Block in the test run, with the relevant core information confined contrast, moving the remaining oil to determine the extent of error saturation.
通过在试验区块的运行，与相关的密闭取芯资料对比，确定可动剩余油的饱和度的误差范围。
Block in the test run, with the relevant core information confined contrast, moving the remaining oil to determine the extent of error saturation.
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