 |
|
particle sizes : 60 phrases in 13 subjects |
| Acoustics | 1 |
| Astronomy | 1 |
| Bioenergy | 1 |
| Chemistry | 1 |
| Coal | 1 |
| Earth sciences | 2 |
| Forestry | 1 |
| General | 1 |
| Measuring instruments | 3 |
| Medical appliances | 6 |
| Metallurgy | 6 |
| Natural resourses and wildlife conservation | 30 |
| Technology | 6 |