 |
| |||
| 允许含尘量 | |||
| permissible dustiness: 3 phrases in 3 subjects |
| Electric machinery | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Technology | 1 |
|
| |||
| 允许含尘量 | |||
| permissible dustiness: 3 phrases in 3 subjects |
| Electric machinery | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Technology | 1 |