標題: ASTM E 1501-1999 提高行人能見度用反射標志的夜間光學性能 [打印本頁] 作者: 兌水 時間: 2009-11-7 07:22 標題: ASTM E 1501-1999 提高行人能見度用反射標志的夜間光學性能 E1501-99(2004) Standard Specification for Nighttime Photometric Performance of Retroreflective Pedestrian Markings for Visibility Enhancement