发布:具有平整功能的钻头烧结装置
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玄武岩新钻头:创新制造方法
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柔性连接防振钻头发布
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连续波纹齿金刚石钻头发布
Li Xiaohuan Li Zhongyong Patents and innovation
新型金刚石钻头设备:可回收电镀液
高效地质钻头:扩展的地层适用性
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钻岩钻头:提升精度,减少偏差
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旨在减少堵塞的金刚石地质钻头
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金刚石地质钻头,带冷却和切屑清除功能
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具有防滑功能的金刚石地质钻头
Li Xiaohuan Li Zhongyong Patents and innovation