| 单词 | pneumatic hammer |
| 例句 | At that moment, rising above the staccato rattle of the pneumatic hammer, came the unmistakable whirr of an aerial propeller. The Airship "Golden Hind" 2012-04-21T02:00:26.983Z I lived in a former one-room schoolhouse nearby and earned a handsome sum operating a pneumatic hammer, a type of jackhammer. The Boss: Plum District?s Chief, on Investing in Mom Power 2012-02-11T23:30:52Z The steel-workers pace their girders twenty floors high almost in mid-season form, and their pneumatic hammers scold and chatter through the sultry hours. Atlantic Classics 2011-10-16T02:00:18.497Z From our trenches came a sound like the beating of a hundred pneumatic hammers. The Black Watch A Record in Action It's strange though—they're tapping from the inside—little pneumatic hammers at a furious pace. The Brain In constructing the Harvard Stadium the walls were dressed with pneumatic hammers fitted with a tool with a saw-tooth cutting blade like an ice chopper. Concrete Construction Methods and Costs Where tools have to withstand shocks and vibration, as in pneumatic hammer work, in severe punching duty, hot or cold upsetting or similar work, tool steels containing vanadium or chrome-vanadium give excellent results. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel The sound reminded me strikingly of that which is heard when pneumatic hammers are driving home rivets through steel beams. In the Amazon Jungle Adventures in Remote Parts of the Upper Amazon River, Including a Sojourn Among Cannibal Indians The pneumatic hammers had a crank, with a connecting rod or a slotted crossbar on the piston-rod, a piston and a cylinder which formed the hammer-head. Scientific American Supplement, No. 344, August 5, 1882 We used to rivet the crank-case arms to the crank-case, using pneumatic hammers which were supposed to be the latest development. My Life and Work |
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