 |
| doublings: 77 phrases in 19 subjects |
| Biology | 1 |
| Chemistry | 1 |
| Construction | 6 |
| Demography | 1 |
| Earth sciences | 1 |
| Fish farming pisciculture | 1 |
| General | 1 |
| High energy physics | 21 |
| Linguistics | 1 |
| Medical | 1 |
| Medical appliances | 1 |
| Metallurgy | 3 |
| Natural sciences | 1 |
| Packaging | 1 |
| Statistics | 1 |
| Technology | 20 |
| Textile industry | 10 |
| Transport | 4 |
| Wrestling | 1 |