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valve injection : 48 phrases in 11 subjects |
| Automobiles | 14 |
| Engineering geology | 1 |
| Mechanics | 1 |
| Nautical | 2 |
| Navigation | 1 |
| Oil processing plants | 1 |
| Plastics | 1 |
| Refrigeration | 2 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 23 |
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