单词 | stone drill |
释义 | stone drill (once / 1477414 pages) n WORD FAMILY stone drill: stone drills USAGE EXAMPLES"Sounds like some one pounding a stone drill; perhaps they are going to do some blasting!" Cheley, F. H., Buffalo Roost(2010) n a drill for penetrating rock Syn|Hypo|Hyper bore bit, borer, rock drill cross bit a rock drill having cruciform cutting edges; used in mining star drilla steel rock drill with a star-shaped point that is used for making holes in stones or masonry; it is operated by hitting the end with a hammer while rotating it between blows straight flute, straight-fluted drilla rock drill with flutes that are straight drill a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows) |
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