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| 电介质材料 | |||
| 介电材料; 介电材料介质材料; 介质材料 | |||
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| 电气绝缘材料 | |||
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диэлектрический материал : 10 phrases in 3 subjects |
| Antennas and waveguides | 2 |
| Electronics | 4 |
| Technology | 4 |
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