spikes : 44 phrases in 16 subjects |
Agriculture | 1 |
Botany | 4 |
Communications | 1 |
Earth sciences | 1 |
Electronics | 5 |
Finances | 1 |
Forestry | 1 |
General | 1 |
Hobbies and pastimes | 1 |
Industry | 4 |
Mechanic engineering | 7 |
Metallurgy | 4 |
Natural resourses and wildlife conservation | 1 |
Natural sciences | 4 |
Patents | 1 |
Technology | 7 |