| 单词 | tool steel |
| 释义 | > as lemmastool steel tool steel n. steel of the quality used for tools. ΘΚΠ society > occupation and work > materials > derived or manufactured material > metal > steel > [noun] > steel for specific use tool steel1868 structural steel1895 1868 F. H. Joynson Metals in Constr. 90 For tool-steel, from 1·5 to 1·7 per cent [of charcoal being required]. 1894 R. R. Bowker in Harper's Mag. Jan. 419 Too costly..to be in demand except for tool steel. < as lemmas |
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