| 词汇 | drill-bit |
| 释义 | drill bit noun[ C ] uk /ˈdrɪl ˌbɪt/ us /ˈdrɪl ˌbɪt/ the long sharp part of a drill(= a tool or machine that makes holes) that spins around and cuts the hole: I need a 1 3/4 inch drill bit. The rock was so hard that the crew broke two or three drill bits each day. A rotary saw is similar to a drill that uses a saw blade instead of a drill bit. After a few attempts at drilling down, the drill bit became stuck. Start with a drill bit just slightly larger in diameter than the hole going through the rivet. Synthetic diamonds are used in tools like drill bits and sanders. To drill holes in a mirror, you need a special drill bit with a spear point. Tools -pronged adjustable spanner adze Allen key auger awl excavator gimlet gouge grapnel grappling iron grindstone guillotine plunger prong rasp razor knife reamer sander trowel |
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