| |||
| 按钮开关 | |||
| 按钮 | |||
| 按键开关 | |||
| 圆头开关 | |||
|
button switch : 30 phrases in 10 subjects |
| Air defense | 2 |
| Automobiles | 1 |
| Aviation | 1 |
| Electronics | 9 |
| Metallurgy | 6 |
| Nautical | 1 |
| Navigation | 1 |
| Rail transport | 1 |
| Shipbuilding | 1 |
| Technology | 7 |
| |||
| 按钮开关 | |||
| 按钮 | |||
| 按键开关 | |||
| 圆头开关 | |||
|
button switch : 30 phrases in 10 subjects |
| Air defense | 2 |
| Automobiles | 1 |
| Aviation | 1 |
| Electronics | 9 |
| Metallurgy | 6 |
| Nautical | 1 |
| Navigation | 1 |
| Rail transport | 1 |
| Shipbuilding | 1 |
| Technology | 7 |