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| 镜头孔径｛显技｝ | |||
| 灯配光镜开口 | |||
| 透镜光圈; 透镜孔径 | |||
| 镜头光圈 (刻度) | |||
| lens aperture: 37 phrases in 6 subjects |
| Construction | 1 |
| Electronics | 6 |
| General | 1 |
| Metallurgy | 6 |
| Space | 1 |
| Technology | 22 |
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