 |
| self-draining: 11 phrases in 8 subjects |
| Agriculture | 1 |
| Ecology | 1 |
| Firefighting and fire-control systems | 1 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Refrigeration | 1 |
| Scuba diving | 1 |
| Thermal engineering | 4 |
|
| self-draining: 11 phrases in 8 subjects |
| Agriculture | 1 |
| Ecology | 1 |
| Firefighting and fire-control systems | 1 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Refrigeration | 1 |
| Scuba diving | 1 |
| Thermal engineering | 4 |