英和和英

名詞

drill rig (plural drill rigs)

1. An oil rig.
2. Used other than figuratively or idiomatically: see drill,‎ rig.
   • 1979, Iqtidar H. Siddiqui, Irrigation canals: planning, design, construction, and maintenance:

     In sandy strata, 7 to 9 inches diameter holes are drilled with a percussion type drill rig.

   • 2001, William A. Hustrulid, Richard L. Bullock, Underground Mining Methods, page 224:

     As no standard drill rig for 38-mm holes was available, Atlas Copco developed the Trakker 526, a drill rig for small-hole drilling that was adapted to narrow vein mining