... punching test 冲孔试验 punching tool steel 冲制工具钢，冲头钢 puncture ①击穿②冲孔，穿孔 ...
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Repair, such as high-speed tool steel cutting planer tools, high temperature and punching moulds, stamping tools and cutting knife plate rolling and cutting tools under the mold cutting edge.
修复高速工具钢，如切削冲孔和刨工具，高温冲压工具和模具，剪切刀板轧钢和切削工具下模的切削刃口。
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