profondeur de pénétration : 16 phrases in 10 subjects |
Agriculture | 1 |
Communications | 1 |
Earth sciences | 2 |
Electronics | 4 |
Life sciences | 2 |
Metallurgy | 1 |
Natural resourses and wildlife conservation | 1 |
Textile industry | 1 |
Thermal Energy | 1 |
Transport | 2 |