science chemistry biology medicine and people concept - close up of young scientists with pipette and flasks making test or research in clinical laboratory
ID: 286477145
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- 大图:3467 × 2311 像素·29.35 cm × 19.57 cm·300dpi·JPG
- 中图:1000 × 667 像素·35.28 cm × 23.53 cm·72dpi·JPG
- 小图:500 × 333 像素·17.64 cm × 11.75 cm·72dpi·JPG