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- efficient use of resources 1
- eficienta energetica 1
- eficiența energetică 1
- eficiență energetică 3
- eficienţa energetică 1
- egg 1
- eggs 1
- Eisenia fetida 1
- Elamant sensibil, caracteristici magnetice, tensiuni mecanice 1
- elastic element 1
- elastic force 1
- elastic modulus 1
- Electrets 1
- electric bus 1
- electric cable 1
- electric motor 1
- electric traction 1
- Electric utilities 1
- electrical circuits 1
- electrical conductivity 2