取芯钻头不同的唇面形状、胎体配方可适应各种复杂岩层的取芯，所钻取的岩芯将为地质和工程研究提供可靠的数据。
Different lip shape and matrix formula of coring bit apply to various coring work in complex rock. The core can provide reliable data to geological and engineering research.
研究人员在从阿曼海湾的深海沉积物中钻取的岩芯中发现了同样能说明问题的旱灾的迹象。
Researchers found the same telltale signature of drought in a deep-sea sediment core drilled from the Gulf of Oman.
从提提卡卡湖125英里深处钻取的奎卡亚冰岩芯记录了该地区的年降雨量。
The Quelccaya ice core, drilled just 125 miles from Lake Titicaca, contains an annual record of precipitation for the region.
碎裂岩系；取芯率；双管单动钻具；钻具造型；钻探工艺。
Cataclasite series; Rate of core recovery; Single Rotary and Double Tube core Barrel, Structure of drilling tool; drilling technology.
碎裂岩系；取芯率；双管单动钻具；钻具造型；钻探工艺。
Cataclasite series; Rate of core recovery; Single Rotary and Double Tube core Barrel, Structure of drilling tool; drilling technology.
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