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rock drill |
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rock drill [′räk ‚dril]
(mechanical engineering) A machine for boring relatively short holes in rock for blasting purposes; motive power may be compressed air, steam, or electricity. rock drill A machine or device for drilling a hole in rock so that it may be blasted; usually driven by compressed air, but also may be driven by electricity or by steam. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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