retro-reflectiveCOCA³¹⁵¹¹¹⁺⁴ 基本例句 🌏向后反射；回归反射型；偏振镜片型 The main contents of standard“ Nighttime Photometric Performance and Test Methods of Retro-reflective Pedestrian Markings”, are the test principium, points and steps of the retro- reflective markings. 国标《行人反光标识夜间光度性能及测试方法》的主要内容包括行人反光标识夜间光度性能的测试原理、测试要点和测试步骤。 dictall