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ligação do sistema eléctrico à terra | |||
ligação à terra da rede |
system grounding : 22 phrases in 8 subjects |
Antennas and waveguides | 1 |
Communications | 6 |
Construction | 1 |
Energy industry | 2 |
Environment | 1 |
General | 1 |
Information technology | 2 |
Transport | 8 |