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通过对光、视觉、颜色有关性质的论述，阐明了如何利用其特，点建立一个“安全环境”，从而降低机电、运输等事故率，达到安全生产的目的。
Through the exposition of light, visual and color related properties, it is clarified how to make use of its specialties and points to establish a “safety environment” so as to reduce the accidents rate of electromechanical and transportation and achieve the purpose of safety production.