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frecuencia : 1768 phrases in 59 subjects |
Agriculture | 5 |
Antennas and waveguides | 2 |
Astronautics | 2 |
Automatic control | 7 |
Chemistry | 3 |
Communications | 412 |
Cultural studies | 3 |
Earth sciences | 73 |
Economy | 1 |
Electric machinery | 6 |
Electric motors | 3 |
Electric traction | 2 |
Electricity generation | 3 |
Electronics | 674 |
Energy industry | 4 |
Environment | 3 |
Finances | 2 |
General | 15 |
Health care | 21 |
Industry | 14 |
Information technology | 108 |
Labor law | 2 |
Life sciences | 18 |
Lighting other than cinema | 1 |
Magnetics | 9 |
Materials science | 1 |
Mathematics | 46 |
Mechanic engineering | 9 |
Medical | 26 |
Metallurgy | 7 |
Microsoft | 13 |
Natural sciences | 13 |
Nuclear physics | 1 |
Obsolete / dated | 1 |
Patents | 1 |
Pharmacy and pharmacology | 3 |
Physical sciences | 8 |
Piezoelectric crystals | 37 |
Power electronics | 1 |
Power lines | 9 |
Power system protection | 2 |
Radio | 42 |
Radiology | 1 |
Reliability | 6 |
Satellite communications | 3 |
Scientific | 2 |
Semiconductors | 3 |
Sound recording | 4 |
Statistics | 48 |
Technology | 35 |
Telecommunications | 4 |
Telegraphy | 5 |
Telephony | 2 |
Thermal Energy | 9 |
Transport | 26 |
Vacuum tubes | 4 |
Video recording | 1 |
Welding | 1 |
Work flow | 1 |