| 英文.... | Power tools used for boring holes or setting screws. Generally used for hand-held tools that are operated electrically via alternating or direct current, this term may also be extended to large machinery used to dig tunnels for mining or transportation purposes. |
| power drills............ | [VP] |
| ................. | Random House Dictionary of the English Language (1987) |
| ................. | Lankton, Machine Under the Garden, Technology and Culture (1983) |
| ................. | Oxford English Dictionary Online (2002-) "power;" accessed 9 May 2007 |
| power drill............ | [VP] |
| ................. | Getty Vocabulary Program rules |
| Subject:............ | [VP] |
| ................. | Random House Unabridged Dictionary (1993) |
| ................. | Lankton, Machine Under the Garden, Technology and Culture (1983) |
| ................. | Oxford English Dictionary Online (2002-) |