DIN EN 1861-1998 制冷系统和热泵系统流程图和管道流程及仪器

liuxilin1215 发表于 2014-7-9 22:17:21

DIN EN 1861-1998 Refrigerating systems and heat pumps - System flow diagrams and piping and instrument diagrams - Layout and symbols;
German version EN 1861:1998
制冷系统和热泵系统流程图和管道流程及仪器流程图布局和符号

admin 发表于 2014-7-10 09:41:13