zhengchun/MinerU: https://github.com/opendatalab/MinerU.git @ 0aa457787417e640a29f617458d0bd8bb2057438

Siyu Hao 1754c040ee upload an introduction about chemical formula and update readme.md (#489)		1 rok temu
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introduction.pdf	1754c040ee upload an introduction about chemical formula and update readme.md (#489)	1 rok temu
introduction.xmind	1754c040ee upload an introduction about chemical formula and update readme.md (#489)	1 rok temu