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1 天
从手摇纺车到量子计算机:中国工人用双手解码的"硬核科技通关秘籍"
东北老工业基地的退休技工赵大爷,至今保留着1958年发明的"三孔看火法"。当时炼钢炉温控全靠老师傅经验,他愣是在观察孔旁边钻了两个小孔,通过三个孔看到的火焰颜色对比,硬是把炉温误差从200度压到了50度以内。"这土办法后来被写进鞍钢操作手册,比进口的测温仪还靠谱。"老头说着,从木箱里翻出个锈迹斑斑的三角铁片,上面还刻着当年的测温刻度。
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