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| 阀套: 93 phrases in 15 subjects |
| Automobiles | 8 |
| Aviation | 1 |
| Compressors | 3 |
| Computer numerical control | 1 |
| Drilling | 10 |
| Ecology | 1 |
| Electronics | 1 |
| Engineering geology | 2 |
| Hydroelectric power stations | 3 |
| Nautical | 1 |
| Oil / petroleum | 12 |
| Rail transport | 6 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 42 |
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