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| 11. | folded light beam |
| 折叠光束，(投射背景时)用折叠法缩短的光束 |
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| 12. | light beam focusing |
| 光束聚焦 |
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| 13. | light beam deflector |
| 光束偏转器 |
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| 14. | wide beam flood-light |
| 阔光束泛光灯 |
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| 15. | modulated beam of light |
| 调制光束 |
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| 16. | beam of light transistor |
| 光束晶体管 |
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| 17. | phase-modulated light beam |
| 调相光束 |
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| 18. | light beam remote contro |
| 光束式遥控 |
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| 19. | beam of (white) light |
| (白)光束 |
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| 20. | colour-coded light beam |
| 彩色编码光束 |
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