 |
| |||
| dual triode; twin triode | |||
| duo-triode; duplex triode | |||
| double triode; duotriode | |||
|
双 三极管 : 18 phrases in 8 subjects |
| Air defense | 3 |
| Automobiles | 4 |
| Business | 1 |
| General | 3 |
| Geophysics | 1 |
| Radio | 2 |
| Rail transport | 2 |
| Semiconductors | 2 |
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