percussion drill
noun /pəˈkʌʃn drɪl/
/pərˈkʌʃn drɪl/
(British English) (also hammer drill British and North American English)
- a drill that makes holes in stone or other hard building materials by making very fast hitting movements as it turns
| 单词 | percussion drill |
| 释义 | percussion drillnoun /pəˈkʌʃn drɪl/ /pərˈkʌʃn drɪl/ (British English) (also hammer drill British and North American English)
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