 |
| lowest: 21 phrases in 8 subjects |
| Abbreviation | 10 |
| Business | 1 |
| Electronics | 1 |
| Military | 5 |
| Nuclear and fusion power | 1 |
| Photography | 1 |
| Transport | 1 |
| United States | 1 |
|
| lowest: 21 phrases in 8 subjects |
| Abbreviation | 10 |
| Business | 1 |
| Electronics | 1 |
| Military | 5 |
| Nuclear and fusion power | 1 |
| Photography | 1 |
| Transport | 1 |
| United States | 1 |