钻孔

• Rescue workers are drilling a hole on the north side of the mine .
  营救人员正在矿北边钻孔。
• The hole was lined with a steel tube to prevent the walls from falling in .
  用一根钢管给钻孔加衬，以防井壁坍塌。
• The high intensity of a laser beam makes it a convenient drill .
  激光束的强度极高，这就使它成为一种方便的钻孔工具。
• Specially constructed bore-hole seismometers are now available on the market .
  目前在市场上已出售特制的钻孔地震计。
• The operation of trephination of the skull is one of the oldest in the annals of surgery .
  在外科历史上早就有颅骨钻孔术。
• Temperature logs in bore holes down to several thousand metres are made by cable probes .
  几千米钻孔用的温度测井装置是用电览探头做的。
• When it has been decided where we are going to drill, we put up at the surface an oil derrick .
  决定了钻孔位置后，我们就在地面上竖起井架。
• The crack between the coped and hole was removed by air arc and then repaired by welding .
  在修割边和钻孔之间的裂纹用气弧消除，然后进行焊补。
• It is this water, called ground water, which is found in wells, in borings, and in springs .
  这种水就叫做地下水，在水井、钻孔和喷泉里都能见到。
• Colloidal particles are formed in considerable amounts in hard-rock drilling and blasting operation .
  在硬岩石钻孔和爆破作业中，大量地生成胶体粒子。