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| 阀线: 50 phrases in 14 subjects |
| Automobiles | 11 |
| Aviation | 1 |
| Compressors | 2 |
| Construction | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Electronics | 2 |
| Mechanics | 3 |
| Metallurgy | 2 |
| Oil / petroleum | 10 |
| Oil processing plants | 1 |
| Refrigeration | 1 |
| Technology | 12 |
| Wind Energy | 2 |
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