diamond core bit meaning in English

金刚石取心钻头

Diamond drilling bits and diamond core bits
金刚石钻头及金刚石取心钻头
Factors affecting performance of sandwich - structured diamond core bits
影响夹层式钻头性能因素的研究
Diamond core bit for coal drilling
煤田钻探金刚石取心钻头
Researches and applications of compound diamond core bit with sintered body
混合型金刚石烧结体取心钻头的研制及应用
Run in a diamond core bit
下金刚石取芯钻头

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