A power drill that works by delivering a rapid succession of blows, used chiefly for drilling in masonry or rock.
风动冲击凿岩机，冲击式钻机
Example sentencesExamples
A contractor can switch the operating mode of the DV14DV rotary hammer from a driver drill to a hammer drill with just a turn of the tool's selection dial.
On one job, she dangled beneath the 90-foot-high arches of New York City's Cathedral Church of St. John the Divine for more than three hours while installing crack gauges with a hammer drill.
The next door neighbour getting carried away with his hammer drill when the mood takes him, and his Alsatian's demented reactions, can rapidly unravel your sanity.
If you have a lot of holes to drill or are drilling unusually hard materials, you may need the extra power of a hammer drill.
The hammer drill, with its ratchet-like impact mechanism, works best on brick, block, and light concrete, but not hard concrete (that is, high compressive strength concrete or that with large aggregate).
Definition of hammer drill in US English:
hammer drill
nounˈhæmər ˌdrɪlˈhamər ˌdril
A power drill that works by delivering a rapid succession of blows, used chiefly for drilling in masonry or rock.
风动冲击凿岩机，冲击式钻机
Example sentencesExamples
If you have a lot of holes to drill or are drilling unusually hard materials, you may need the extra power of a hammer drill.
The next door neighbour getting carried away with his hammer drill when the mood takes him, and his Alsatian's demented reactions, can rapidly unravel your sanity.
The hammer drill, with its ratchet-like impact mechanism, works best on brick, block, and light concrete, but not hard concrete (that is, high compressive strength concrete or that with large aggregate).
A contractor can switch the operating mode of the DV14DV rotary hammer from a driver drill to a hammer drill with just a turn of the tool's selection dial.
On one job, she dangled beneath the 90-foot-high arches of New York City's Cathedral Church of St. John the Divine for more than three hours while installing crack gauges with a hammer drill.