 |
| |||
| imp | |||
| ipv | |||
| impr. | |||
| improvement: 124 phrases in 15 subjects |
| Abbreviation | 76 |
| Business | 2 |
| Ecology | 1 |
| Education | 1 |
| Electronics | 3 |
| Energy industry | 2 |
| Military | 22 |
| NASA | 1 |
| Physiology | 1 |
| Technology | 1 |
| Transport | 7 |
| United Nations | 2 |
| United States | 3 |
| University | 1 |
| Veterinary medicine | 1 |