The smart city and communication network concept internet of Things. City information communication WIFI internet network technology 4.0.
ID: 1426979339
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- 大图:6015 × 4016 像素·50.93 cm × 34 cm·300dpi·JPG
- 中图:1000 × 668 像素·35.28 cm × 23.57 cm·72dpi·JPG
- 小图:500 × 334 像素·17.64 cm × 11.78 cm·72dpi·JPG