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multiple valve | |||
multielectrode; multielectrode tube; multielectrode valve; multipolar tube | |||
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multiunit tube | |||
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multielectrode tube |
多极管 : 52 phrases in 8 subjects |
Air defense | 2 |
Aviation | 1 |
Electronics | 30 |
General | 7 |
Information technology | 1 |
Semiconductors | 1 |
Space | 1 |
Technology | 9 |