标 准 编 号:BS EN 12284-2003 简体中文标题:冷却系统和加热泵.阀.要求、试验及标记 繁体中文标题:冷却系统和加热泵.阀.要求、试验及标记 English Name:Refrigerating systems and heat pumps - Valves - Requirements, testing and marking