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核桃上雕船有什么稀奇，来看看头发丝上刻一个体育馆！
source link: https://tech.sina.com.cn/d/i/2020-06-10/doc-iirczymk6194090.shtml
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来源：中国科普博览核桃雕或许不稀奇，但你能想象在头发丝上画出一个体育馆吗？《论语》有云：“工欲善其事，必先利其器”。由此可见，好的工具在制造过程中起着关键作用。在前工业时代，人们以人手为工具，采用手工方式制造各种生产、生活用具。进入工业时代
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