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| in a metal | |||
| 金属内: 32 phrases in 14 subjects |
| Automobiles | 4 |
| Aviation | 1 |
| Chemistry | 1 |
| Drilling | 2 |
| Electronics | 2 |
| General | 2 |
| Hydroelectric power stations | 1 |
| Metallurgy | 8 |
| Molecular genetics | 1 |
| Oil / petroleum | 1 |
| Polymers | 2 |
| Technology | 5 |
| Thermal Energy | 1 |
| Wood processing | 1 |