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perforation : 119 phrases in 24 subjects |
Agriculture | 3 |
Automated equipment | 3 |
Cables and cable production | 2 |
Chemistry | 1 |
Coal | 2 |
Communications | 9 |
Cultural studies | 9 |
Earth sciences | 1 |
General | 1 |
Health care | 1 |
Immigration and citizenship | 1 |
Industry | 3 |
Information technology | 29 |
Labor law | 2 |
Life sciences | 4 |
Materials science | 1 |
Mechanic engineering | 3 |
Medical | 16 |
Metallurgy | 11 |
Natural sciences | 2 |
Telegraphy | 1 |
Textile industry | 1 |
Transport | 2 |
Work flow | 11 |