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38*25*1=0.249kg/m,38*25*1.2=0.394kg/m,
38*38*1=0.401kg/m,38*38*1.2=0.479kg/m,
50*25*1=0.396kg/m,50*25*1.2=0.472kg/m,
50*25*1.5=0.585kg/m,50*50*1=0.531kg/m,
50*50*1.2=0.635kg/m,50*50*1.4=0.738kg/m,
76*25*1=0.537kg/m,76*25*1.2=0.641kg/m,
76*25*1.5=0.797kg/m,76*44*1=0.639kg/m,7
76*44*1.2=0.765kg/m,76*44*1.5=0.951kg/m,
76*76*1=0.813kg/m,76*76*1.4=1.132kg/m,
100*25*1=0.667kg/m,100*25*1.2=0.797kg/m,
100*44*1=0.77kg/m,100*44*1.2=0.921kg/m,
100*44*1.5=1.146kg/m,100*50*2=1.883kg/m,
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pºâ¤½¦¡¡G{4.7 x 7.5 -¡] 4.7-0.12 X 2¡^x ( 7.5-0.12 X 2 )} x ¾T¤èºÞªºªø«×¡]100cm¡^x 2.7 §J /¥ß¤èÍù¦Ì =775§J/¦Ì ¨ä¥Lªº¥i«ö¡G{ªø¡Ñ¼e¡]ªø-2¡Ñ«p¡^¡Ñ¡]¼e-2¡Ñ«p¡^}¡Ñ¾TºÞªø¡]Íù¦Ì¡^¡Ñ 2.7§J/¥ß¤èÍù¦Ì = ¾TºÞ«¡]§J¡^ ª`¡G2.7§J/¥ß¤èÍù¦Ì ¬°¾Tªº±K«×
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