| |||
electronic valve (GB); electron tube (USA) | |||
pipe; duct; drain; tube | |||
electronic tube; electronic valve | |||
valve | |||
| |||
electron tubes |
tube électronique : 39 phrases in 9 subjects |
Antennas and waveguides | 9 |
Automated equipment | 1 |
Communications | 4 |
Earth sciences | 3 |
Electronics | 16 |
General | 1 |
Measuring instruments | 3 |
Medical appliances | 1 |
Natural sciences | 1 |