阀门标准 BS EN ISO 10297-2006 可运输的气瓶 阀门 规范及定型试验Transportable gas cylinders. Cylinder valves. Specification and type testing.pdf [db:摘要]
阀门标准 BS EN 12284-2003 Refrigerating systems and heat pumps-Valves-Requirements, testing and marking.pdf [db:摘要]
