code mark
| inversion
| code mark abbr. | |
| agric. | appellation chiffrée; indicatif |
| inversion abbr. | |
| gen. | inversion |
| commun. | interversion |
| earth.sc. | transformation allotropique |
| el. | conversion en onduleur |
| environ. | inversion |
| forestr. | inversion de température |
| hobby transp. | retournement |
| IT tech. | négation |
| life.sc. | inversion atmosphérique |
| med. | transformation réversible |
| |||
| appellation chiffrée; indicatif m | |||
| marque conventionnelle | |||
|
code mark : 7 phrases in 4 subjects |
| Communications | 3 |
| Electronics | 1 |
| Information technology | 1 |
| Power lines | 2 |