标 准 编 号:BS EN ISO 2556-2001 简体中文标题:塑料.在大气压力下薄膜和薄板的气体透过率的测定.测压法 繁体中文标题:塑料.在大气压力下薄膜和薄板的气体透过率的测定.测压法 English Name: Plastics - Determination of the gas transmission rate of films and thin sheets under atmospheric pressure - Manometric method