1、2014 N 1177:2008 Impact attenuating playground surfacing Determination of critical fall height (IDT) 1177 2013 11772013II1 - () -, 42 455 3 - 24 2013 . 181-4 1177:2008 - , . (EN 1177:2008 Impact attenuating playground surfacing Determination of critical fall height). - - , 5 11772006 1.02012 ( 8). (
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