Scientists are weighing beakers with chemicals in scales with Digital weighing scales. The background is a periodic table of the element.Used in the laboratory.
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- 大图:4124 × 2745 像素·34.92 cm × 23.24 cm·300dpi·JPG
- 中图:1000 × 666 像素·35.28 cm × 23.5 cm·72dpi·JPG
- 小图:500 × 333 像素·17.64 cm × 11.75 cm·72dpi·JPG