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发表于 2009-10-23 15:14:07
ASTM D 6341-1998 条状塑料材料和条状塑料型材在华氏：-30度...
D6341-98 Standard Test Method for Determination of the Linear Coefficient of Thermal Expansion of Plastic Lumber and Plastic Lumber Shapes Between -30 and 140°F (-34.4 and 60°C)