- machine tool steel
- 用: 40分钟跑完全程 run the course in 4 ...
- 钢: sharpen; strop; whet
- 切削工具用硬质合金牌号: grades of cemented carbide : grades of cemented carbide for cutting tools
- 切削工具: cutter; cutting instruments; cutting tools; cutting-away tool
- 切削工具钢: cutting tool steel; cutting-tool steel
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