 |
| |||
| indicator scale | |||
| 指示器刻度: 21 phrases in 11 subjects |
| Air defense | 1 |
| Automobiles | 4 |
| Aviation | 2 |
| Construction | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Plastics | 2 |
| Shipbuilding | 1 |
| Technology | 5 |
|
| |||
| indicator scale | |||
| 指示器刻度: 21 phrases in 11 subjects |
| Air defense | 1 |
| Automobiles | 4 |
| Aviation | 2 |
| Construction | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Plastics | 2 |
| Shipbuilding | 1 |
| Technology | 5 |