ISO-769-1972.pdf
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1、INTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATION *ME-l m2 is the immersion. mass, in grams, of the test piece after The water absorption shall be determined to the 0.1 %. 7.1.2 Swelling nearest The swelling in thickness, G, expressed as a percentage, of each test piece shall be
2、calculated in accordance with the following formula : a1 is the thickness, in millimetres, of the test piece before immersion; a2 is the thickness, in millimetres, of the test piece after i mmersion. The swelling shall be determined to the nearest 0.1 %. 7.2 For a board The water absorption and the
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- ISO 769 1972
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