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| 孔径照射［明］; 口径照射 | |||
| 照度分布; 孔径照明; 孔径照度; 孔径面照明 | |||
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aperture illumination : 7 phrases in 4 subjects |
| Air defense | 2 |
| Electronics | 1 |
| Space | 3 |
| Telecommunications | 1 |
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