drill hole

• Usage of roll welding machine for hooped reinforcement cage of pile with drilling hole
  钻孔桩钢筋笼滚焊机的应用
• Pre - drilled hole at panel ; led indicator hole 4mm dia . toggle switch hole
  预钻孔面板; led灯孔4mm摇头电源10mm
• Drilled holes and screw connections for busbars ; channel section busbars
  汇流条用钻孔和螺纹连接件.槽形截面汇流条
• Prevention of quality accident for drill hole filling pile in sand soil foundation
  砂土地基钻孔灌注桩质量事故预防
• Engineering drill hole dia .
  钻孔直径：
• Aerospace ; bending of sheet and strip ; stop - drill holes , corner configurations
  航空航天.薄板材和带材的弯曲.钻头孔.角结构
• The quantity direct control and trouble treatment of drill hole and cast - in - place pile
  钻孔灌注桩的质量监督控制及事故处理
• Drilled holes and screw connections for busbars ; rectangular cross section busbars
  汇流条用钻孔和螺纹连接件.矩形截面汇流条
• Drill hole dia .
  钻孔直径：
• The disturbing degree is different with different sampling method in drilling hole
  在钻孔中采用不同的取样方法，土样受到的扰动程度也不一样。