This European Standard covers the following product performance characteristics: reaction to fire, water vapourpermeability, flexural strength, and thermal resistance.
此欧洲标准涵盖以下产品性能特点：防火性能，水蒸气渗透性、抗折强度和热阻。
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The permeability constants of both liquid water and water vapour through eleven polymer films have been measured at three temperatures by weighing method.