 |
| system efficiency: 19 phrases in 14 subjects |
| Agrochemistry | 1 |
| Energy industry | 1 |
| Firefighting and fire-control systems | 1 |
| Food industry | 1 |
| General | 1 |
| Meat processing | 2 |
| Military | 2 |
| Oil and gas | 1 |
| Production | 1 |
| Statistics | 1 |
| Technology | 4 |
| Telecommunications | 1 |
| Transport | 1 |
| Water resources | 1 |