兑水 发表于 2009-11-17 14:15:38

ASTM E 2176-2001 连续浸润标准条件下路面标记反射亮度系数...

E2176-01 Standard Test Method for Measuring the Coefficient of Retroreflected Luminance (RL) of Pavement Markings in a Standard Condition of Continuous Wetting
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