光谱

• Photographic silver halide emulsions are spectrally sensitized with a tricarbocyanine dye .
  照像卤化银乳剂是用三碳菁染料进行光谱增感的。
• A convenient classification of stars is based upon the observed sequence of spectral types .
  一种实用的恒星分类法是基于测得的光谱类型序列。
• Good spectra of the spiral nebulas are difficult to obtain because of their extreme faintness .
  旋涡星云因为非常暗，难以得到它们的清晰的光谱。
• Transmission of a vertical path through the atmosphere may only be about 50% in this region .
  整层大气铅值透过率在这个光谱区可能只有50左右。
• These levels lie so close together that they are generally not resolved in spectroscopic work .
  这些支项如此紧密靠在一起以致在光谱工作中一般分辨不出。
• The spectrum indicates that a polyethylene-like species has migrated to the surface of the elastomer .
  该光谱表明，聚乙稀类物已经迁移到人造橡胶的表面。
• Spectroscopic measurements are, of course, much more accurate than the experiments of the type just described .
  当然，光谱测量远比上述类型的实验精确得多。
• The most accurate observations are made when we observe the light emitted when the vapour pressure is low .
  当蒸气压很低时，可以对原子所发射的光谱作出最精确的观测。
• In chap. 19 we saw that red shifts in stellar spectra result from motions away from the earth .
  在第十九章我们已了解到，恒星光谱中的红移是恒星背离地球的运动造成的。
• The neon lights that adorn our city streets have a spectrum consisting of a few wavelengths near the red end .
  使城市街道生色的氖灯的光谱由一些靠近红色端的波长组成。