Electrical engineers test electrical installations and wiring on protective relays measuring them with a multimeter.
ID: 1895742088
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- 大图:6789 × 3078 像素·57.48 cm × 26.06 cm·300dpi·JPG
- 中图:1000 × 453 像素·35.28 cm × 15.98 cm·72dpi·JPG
- 小图:500 × 227 像素·17.64 cm × 8.01 cm·72dpi·JPG