thin wall diamond bit drilling 薄壁金刚石钻进
diamond drilling bit 金刚石钻头
thin wall diamond drilling bit 金刚石薄壁钻
diamond full-scale drilling bit 金刚石全面钻井钻头
It is proposed that economical performance of diamond bits be quantitatively appraised by use of bit drilling cost.
并提出用钻头钻进成本定量地评价金刚石钻头的经济效果。
Problems and countermeasures of wireline coring drilling in "walk" formation in a uranium mine in Guangxi are introduced with type selection test for diamond drilling bit.
通过绳索取心钻进金刚石钻头选型试验，介绍了广西资源县向阳坪铀矿区“打滑”地层中绳索取心钻进存在的问题及采取的技术措施。
According to the character of drilling in exploration engineering, we have manufactured a new pattern diamond bit.
根据勘探工程钻进的特点，研制开发了一种新型的金刚石钻头。
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