For the PS plate grain and light-sensitivecoating abrasion, an experiment was designed based on factor design, which ensures the veracity of experiments.
针对印刷中砂目和感光层的磨损，采用因子设计法设计实验，保证了实验的准确性。
2
Because only a small fraction of light reflects off the coating, the human eye and sensitive detectors see the material as black.
因为只有极小部分的光线能够反射出涂层，因此肉眼和灵敏的探测仪所观察到的这种材料依旧是黑色的。
3
In photography, the essential lightsensitivecoating on photographic film comprising gelatine and silver salts.