wave velocity : 25 phrases in 10 subjects |
Construction | 2 |
Earth sciences | 5 |
Electronics | 1 |
Life sciences | 5 |
Medical appliances | 1 |
Natural resourses and wildlife conservation | 2 |
Natural sciences | 1 |
Optics branch of physics | 1 |
Physics | 6 |
Technology | 1 |