class 1 | monitor
| Monitor | |
| avia. Canada | Restez à l’écoute; Veillez |
| monitor | |
| gen. | écran témoin |
| auto.ctrl. | superviser |
| English thesaurus | |||
| |||
| 1 particle 0.3μm in size per cubic foot of air | |||
|
class 1 : 11 phrases in 5 subjects |
| Communications | 2 |
| General | 2 |
| Life sciences | 1 |
| Radio | 3 |
| Transport | 3 |