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| 極板 (kyokuban) | |||
| placa: 39 phrases in 13 subjects |
| Accumulators | 11 |
| Antennas and waveguides | 5 |
| Electric machinery | 1 |
| Electric motors | 4 |
| Electronics | 1 |
| General | 2 |
| Lighting other than cinema | 1 |
| Piezoelectric crystals | 5 |
| Power lines | 1 |
| Radio | 1 |
| Rail transport | 3 |
| Thermal Energy | 3 |
| Vacuum tubes | 1 |