frequency characteristic: 42 phrases in 12 subjects |
Analytical chemistry | 1 |
Automatic control | 2 |
Automobiles | 1 |
Communications | 9 |
Computers | 1 |
Electronics | 12 |
General | 3 |
Information technology | 6 |
Life sciences | 1 |
Measuring instruments | 3 |
Mechanic engineering | 1 |
Physics | 2 |