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词汇 percussion drill
释义

percussion drill

noun
/pəˈkʌʃn drɪl/
/pərˈkʌʃn drɪl/
(British English)
(also hammer drill British and North American English)
  1. a drill that makes holes in stone or other hard building materials by making very fast hitting movements as it turns敲击钻:通过在旋转时快速击打动作而在石材或其他坚硬建筑材料上打孔的钻
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