 |
| |||
| 氢气 | |||
| hydrogen gas: 37 phrases in 10 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Chemistry | 1 |
| Geophysics | 3 |
| Metallurgy | 6 |
| Oil / petroleum | 1 |
| Oil processing plants | 1 |
| Shipbuilding | 1 |
| Space | 5 |
| Technology | 17 |
|
| |||
| 氢气 | |||
| hydrogen gas: 37 phrases in 10 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Chemistry | 1 |
| Geophysics | 3 |
| Metallurgy | 6 |
| Oil / petroleum | 1 |
| Oil processing plants | 1 |
| Shipbuilding | 1 |
| Space | 5 |
| Technology | 17 |