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31. | light splitting |
| 分光|分束 |
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32. | astronomical spectroscopy, principles of |
| 天体分光原理 |
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33. | electric spectrophotometry |
| 电分光光度学 |
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34. | light-splitting electrooptical system |
| 分光电光系统 |
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35. | visible spectrophotometry |
| 可见分光光度学 |
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36. | stellar spectrophotometry |
| 恒星分光光度学 |
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37. | Spectral Radiation Tester |
| 分光老化试验机 |
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38. | colour separating prism |
| 彩色分光棱镜 |
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39. | spectroscopic imaging observatory |
| 分光成像观测台 |
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40. | image spliting optical system |
| 影像分光系统 |
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