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