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xatters għall-kostruzzjoni bil-konkos, xaħx u shakes, tal-injam
shuttering for concrete constructional work, shingles and shakes, of wood
最后更新： 2014-11-21
使用频率： 4
质量：
il-wiċċ tas-sit għandu jkun magħmul minn materjali iebsa bħalma hu l-konkrit, l-asfalt jew kull matejral ieħor akustikament ekwivalenti sa raġġ minimu ta’ 10 m madwar iċ-ċentru tas-sezzjoni ta’ l-aċċelerazzjoni u għandu jkun liberu mis-silġ imfarrak, ħaxix twil, ħamrija maqluha jew xaħx.
the surface of the site must be made of hard materials such as concrete, asphalt or any other acoustically equivalent material within a minimum radius of 10 m around the centre of the acceleration section and be free of powdery snow, tall grass, loose soil or cinders.
最后更新： 2014-11-21
使用频率： 3
质量：