 |
| |||
| natural gas system | |||
| 天然气系统: 26 phrases in 10 subjects |
| Automobiles | 1 |
| Company name | 1 |
| Ecology | 1 |
| Economy | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Mining | 1 |
| Nautical | 2 |
| Navigation | 5 |
| Oil / petroleum | 8 |
| Technology | 5 |
|
| |||
| natural gas system | |||
| 天然气系统: 26 phrases in 10 subjects |
| Automobiles | 1 |
| Company name | 1 |
| Ecology | 1 |
| Economy | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Mining | 1 |
| Nautical | 2 |
| Navigation | 5 |
| Oil / petroleum | 8 |
| Technology | 5 |