Test tubes and laboratory tools in an educational illustration that symbolizes scientific research and academic learning processes in life sciences physics and chemistry
ID: 2049701537![复制](//static.hellorf.com/hellorf/_next/images/copy.svg)
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- 大图:2500 × 5000 像素·21.17 cm × 42.33 cm·300dpi·JPG
- 中图:500 × 1000 像素·17.64 cm × 35.28 cm·72dpi·JPG
- 小图:250 × 500 像素·8.82 cm × 17.64 cm·72dpi·JPG