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| surface layer | |
| agric. | couche arable; sol superficiel; terre arable; terre labourable; strate superficielle |
| agric. tech. met. | couche superficielle |
| antenn. | couche de surface |
| activation | |
| automat. | excitation; attaque |
| commun. | déclenchement; mise en service |
| el. | activation d'une cathode thermoélectronique |
| el. engl. | activation |
| environ. | activation des boues |
| tech. | amorçage |
|
surface layer : 26 phrases in 11 subjects |
| Agriculture | 2 |
| Aviation | 1 |
| Chemistry | 1 |
| Construction | 2 |
| Electronics | 8 |
| General | 1 |
| Geology | 1 |
| Life sciences | 3 |
| Metallurgy | 4 |
| Natural resourses and wildlife conservation | 2 |
| Transport | 1 |