 |
| |||
| 配料控制 | |||
|
blending control : 8 phrases in 4 subjects |
| Explosives and Explosive Ordnance Disposal | 1 |
| Oil / petroleum | 1 |
| Oil processing plants | 4 |
| Technology | 2 |
|
| |||
| 配料控制 | |||
|
blending control : 8 phrases in 4 subjects |
| Explosives and Explosive Ordnance Disposal | 1 |
| Oil / petroleum | 1 |
| Oil processing plants | 4 |
| Technology | 2 |