Inside of a student's laboratory in a physics school for the students to research. Metal tubes.
ID: 328555082
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- 大图:5529 × 3685 像素·46.81 cm × 31.2 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