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| 11. | dispersive crysta |
| 分光晶体 |
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| 12. | spectroscopic photography |
| 分光摄影术 |
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| 13. | analyzing filter |
| 分光滤色片 |
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| 14. | double - beam spectrodensitometer |
| 双光束分光光密度计 |
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| 15. | beam splitters |
| 分光膜 |
|
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| 16. | optical splitting system |
| 分光系统 |
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| 17. | spectroscopic binary star |
| 分光双星 |
|
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| 18. | absolute spectrophotometric gradient |
| 绝对分光光度梯度;绝对分光光度梯度 |
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| 19. | optical spectroscopy |
| 分光法 |
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| 20. | single line binary |
| 单线分光双星 |
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