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| 21. | The visible, "rainbow"spectrum is the portion of the electromagnetic spectrum that is visible as light |
| 光谱: 按照电磁辐射的波长(或频率)的排列。可见的「彩虹」光谱是电磁波谱的一部分,为人眼可以看见的光。 |
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| 22. | added carbon to titanium dioxide nanotubes to shift the wavelengths of light the tubes absorb to the visible |
| 他们在二氧化钛奈米管中添加碳，将可吸收的光波长範围转换成可见光波段。 |
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| 23. | They also found that the particles affected the different parts of the spectrum of visible light differently |
| 他们发现这些微粒对可见光中不同的频谱影响不同——蓝光散射的比红光多，使目标看上去较红。 |
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