| 释义 |
core drill
Thesaurus| Noun | 1. | core drill - a drill that removes a cylindrical core from the drill holecore bit - a hollow drilling bit that is the cutting part of a core drill; allows core samples to be takendrill - a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows) |
core drill
core drill[′kȯr ‚dril] (mechanical engineering) A mechanism designed to rotate and to cause an annular-shaped rock-cutting bit to penetrate rock formations, produce cylindrical cores of the formations penetrated, and lift such cores to the surface, where they may be collected and examined. core drillA drill used to remove a sample of rock in situ, for determining bedrock profiles or for obtaining a core for testing; the sample is retained in the core barrel.core drill
Words related to core drillnoun a drill that removes a cylindrical core from the drill holeRelated Words |