When beams of light pass through a fiber optic cable, they tend to degrade.
当光束通过光纤，光强度趋于降低。
A scanner replaces the human eye, and channels light through a fiber-optic cable to a spectral contents analyzer spectrophotometer, as shown in Figure 2.
扫描仪可以取代人眼，渠道光透过光纤电缆，一谱内容分析仪分光光度计，如图2所示。
A scanner replaces the human eye, and channels light through a fiber-optic cable to a spectral contents analyzer spectrophotometer, as shown in Figure 2.
扫描仪可以取代人眼，渠道光透过光纤电缆，一谱内容分析仪分光光度计，如图2所示。
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