core drill bit meaning in English

取芯钻具
岩芯钻头
岩心钻头

Research of structure and performance of diamond core drill bit superfine base powder segments
超细基粉金刚石薄壁套筒钻胎体的组织性能研究
Our company import all kinds of famous tapping machines ( as pneumatic / electric / hydraulic ) from all over the word , various tapping chunks , toolholders , cutting tools , magnetic force drills , air - cored drill bits . pneumatic tools and electric tools
主要进口的产品为欧美各国世界名牌攻丝机（气动，电动，液压），各类攻丝夹头，刀柄，刀具，磁力钻，空芯钻头，其它气动工具，电动工具等。
In the paper , classification , application and technical requirement of the core drilling bit for uranium exploration are briefly discussed , and some key research achievement and application result of the core drilling bit are stated , and the emphases and trend of hit study is indicated
摘要文章概述了铀矿勘查岩心钻探钻头的分类、使用情况和技术要求，重点介绍了上世纪90年代以来我国钻头研究取得的主要成果及生产应用效果，指出了今后钻头研究的重点和方向。