class-B
| valve
| operation
| class B | |
| radio | B-Betrieb |
| valve | |
| gen. | Elektronenröhre; Radioröhre; Ventil; Klappe; Armatur |
| refrig. | Arbeitsventil |
| operation | |
| gen. | Arbeitsablauf; Arbeitsgang; Betrieb; Gang; Operation; Tätigkeit |
| law, ADR | Bedienung |
| |||
| B-Betrieb einer Verstärkerstufe | |||
|
class-B : 25 phrases in 10 subjects |
| Communications | 1 |
| Economics | 1 |
| Electronics | 4 |
| General | 1 |
| Materials science | 1 |
| Measuring instruments | 1 |
| Medical | 6 |
| Microsoft | 1 |
| Technology | 8 |
| Transport | 1 |