摘要
针对 1 1 0mm单动双管金刚石钻具在生产实践中存在的弊端 ,进行改设变更 ,从而提高了钻进效果 ,延长了钻具的使用寿命。
mm double-tube swivel type diamond drilling tool is improved according to its disadvantages in production practice so that drilling efficiency is increased and drilling tool's life is extended.
出处
《矿产勘查》
2000年第6期36-37,共2页
Mineral Exploration
