| 释义 |
drill steeln.（名词）- A high-grade steel used in tools and dies that is made by fusing low-carbon steel with charcoal or cast iron. Formerly prepared in a graphite crucible, it is now produced in an electric furnace. Also called crucible steel 钻钢：用于制造工具或模具的高级钢，由低碳钢与碳或铸铁熔合而成，过去在石墨坩埚中制备，现在用电熔炉生产 也作 crucible steel
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