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| tube generator; tube-type oscillator; valve generator | |||
| electronic tube generator; electronic tube oscillator; thermionic oscillator; tube oscillator; vacuum-tube oscillator | |||
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电子管 振荡 器 : 12 phrases in 4 subjects |
| Construction | 1 |
| Electronics | 4 |
| Metallurgy | 3 |
| Technology | 4 |
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