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| 带阻滤波器 | |||
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stop-band filter : 10 phrases in 7 subjects |
| Air defense | 1 |
| Electric machinery | 1 |
| Electronics | 4 |
| Oil / petroleum | 1 |
| Piezoelectric crystals | 1 |
| Technology | 1 |
| Wind Energy | 1 |
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