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| detection threshold | |||
| detecting threshold; threshold of detectability | |||
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检测阈 : 14 phrases in 7 subjects |
| Air defense | 1 |
| Electronics | 3 |
| Horticulture | 1 |
| Information technology | 1 |
| Space | 2 |
| Technology | 5 |
| Telecommunications | 1 |
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