兑水 发表于 2009-10-30 22:52:57

ASTM E 503-1988 装有对角制动设备的客车在铺砌路面上的防滑...

E503/E503M-88(2000) Standard Test Methods for Measurement of Skid Resistance on Paved Surfaces Using a Passenger Vehicle Diagonal Braking Technique
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