| 单词 | hammer drill |
| 释义 | hammer drillnouna rock drill operated by compressed air in which the boring bit is not attached to the reciprocating piston an electric hand drill providing hammering in addition to rotating action Words nearby hammer drillhammer and tongs, hammer away at, hammerbeam, hammer blow, hammercloth, hammer drill, hammered, Hammerfest, hammer finger, hammerhead, hammerless Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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