孔内

• Hexagonal socket cylindrical head screw with hole for lockwire . iso thread 4h class
  带锁孔内六角圆柱头螺钉. 4h类iso螺纹
• Hexagonal socket cylindrical head screw with hole for lockwire . iso thread 4g class
  带锁孔内六角圆柱头螺钉. iso螺纹4g级
• Trouble shooting for the common in - hole accidents in vibroflotation pile construction
  冲孔桩施工中常见孔内事故的处理方法
• Hexagon socket head cap screws without hole for locking wire . iso thread 4 h class
  无紧锁丝孔内六角圆柱头螺钉. 4h类iso螺纹
• Methods to improve the quality of inner electroplate of connector with small and deep holes
  深孔接触件电镀中孔内镀层质量的方法
• If uses regular slice , wooden plug or micelle must be put in the hole after boring
  如用固定片安装，钻孔后必须在孔内打木塞或胶粒5
• Research and practice on magnetic abrasive machining for inner surface of the smaller hole
  小孔内圆表面磁性磨料研磨加工的实践与研究
• Nickel plated overlay on backseat in stem hole to combat severe alkylation conditions
  在阀杆孔内的后座上镀镍，可应用在严酷的烃化环境。
• Verification of test results with low - strain method by coring and video monitoring through the hole
  钻孔抽芯和孔内录像验证低应变检测方法
• Application of dynamic compaction in hole for deep - lying in ground treatment project of wufu overpass
  孔内深层强夯在五阜立交地基处理中的应用