 |
| |||
| wire mesh mask | |||
| 护面，面罩: 44 phrases in 14 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Drilling | 1 |
| Electronics | 2 |
| Engineering geology | 1 |
| Fencing | 3 |
| Ice hockey | 2 |
| Metallurgy | 11 |
| Oil / petroleum | 2 |
| Shipbuilding | 2 |
| Space | 3 |
| Sports | 2 |
| Technology | 12 |
| United Nations | 1 |
|
| |||
| wire mesh mask | |||
| 护面，面罩: 44 phrases in 14 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Drilling | 1 |
| Electronics | 2 |
| Engineering geology | 1 |
| Fencing | 3 |
| Ice hockey | 2 |
| Metallurgy | 11 |
| Oil / petroleum | 2 |
| Shipbuilding | 2 |
| Space | 3 |
| Sports | 2 |
| Technology | 12 |
| United Nations | 1 |