big diameter pre-borehole

 
  • 大直径预钻孔

big diameter pre-borehole的用法和样例:

例句

  1. A lubricator is redesigned and a big diameter cable and a large I.
    采用大通量流管、大直径电缆;
  2. Application of large - diameter pre - fissures or smooth blasting in underground experiment stop of non - pillar continuous mining is introduced in the paper.
    介绍了大孔径预裂(光面)爆破技术在凤凰山铜矿无间柱连续采矿试验采场中的应用。
  3. The domestic cylinder card with big diameter is heavy rationed wi...
    建议采用重定量时要兼顾出条速度和台时产量。
  4. For concrete lining construction of long inclined shaft with sleep obliquity and big diameter, the construction technology is complex and difficult.
    摘要陡倾角大直径长斜井混凝土衬砌施工技术复杂,施工难度特别大。
  5. This paper introduces the way to turn big diameter holes by rocker drill-press,and analyses its feasibility and applied value though an example.
    介绍利用自制专用工具,用摇臂钻床加工管板大直径管孔的方法;并以一实例加以说明该方法在加工大直径管孔上的可行性及实用性。
  6. Using the imported gold-plated reflector with big diameter and a 10.6um wave length, and using a ZnSe focuser with a neat focusing point.
    进口大直径镀金10.;6um波长反射镜及znse聚焦镜,焦点更细。

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