Structural design engineers work in building structure analysis.Closeup video Insturments and office for designer.drawings and computer on the table.Heavy industry business Concept Construction
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- 大图:2681 × 4016 像素·22.7 cm × 34 cm·300dpi·JPG
- 中图:668 × 1000 像素·23.57 cm × 35.28 cm·72dpi·JPG
- 小图:334 × 500 像素·11.78 cm × 17.64 cm·72dpi·JPG