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| English thesaurus | |||
| |||
| PD | |||
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Positive Displacement : 23 phrases in 9 subjects |
| Earth sciences | 4 |
| Food industry | 4 |
| Materials science | 3 |
| Measuring instruments | 1 |
| Mechanic engineering | 4 |
| Natural resourses and wildlife conservation | 1 |
| Technology | 3 |
| Textile industry | 1 |
| Transport | 2 |