backward-wave
| parametric amplifier
| backward wave abbr. | |
| el. | onde rétrograde |
| parametric amplifier abbr. | |
| el. | amplificateur paramétrique |
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| onde rétrograde | |||
| onde inverse | |||
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backward-wave : 6 phrases in 3 subjects |
| Automated equipment | 1 |
| Electronics | 4 |
| Materials science | 1 |