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3、r softening point of bitumen (ring-and-ball apparatus) (- ( )ASTM D 244 Test methods and practices for emulsi ed asphalts ( ) ASTM 1 Speci cation for ASTM liquid-in-glass thermometers ( - ASTM) ASTM 77 Test methods for inspection and veri cation of thermometers ( - ) ASTM E 1137/ASTM 1137 M Standard
4、 speci cation for industrial platinum resistance thermometers ( ) S 2251 Speci cation for liquid-in-glass ASTM thermometers with low-hazard precision liquids ( S, -)1) ASTM ASTM website, www.astm.org ASTM serviceastm.org. ASTM . ASTM Website standard s Document Summary. Bituminous materials. Method
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