| 单词 |
supercobalt drill |
| 释义 |
supercobalt drill supercobalt drill[¦sü·pər′kō‚bȯlt ‚dril] (design engineering) A drill made of 8% cobalt highspeed steel; used for drilling work-hardened stainless steels, silicon chrome, and certain chrome-nickel alloy steels. |
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