Refrigerating systems and heat pumps 制冷系统和热泵 ; 制冷设备和热泵
Motor compressors for refrigerating systems 制冷机用电动压缩机
central refrigerating systems 中央制冷系统
Pressure equipment for refrigerating systems and heat pumps - Part 1: vessels - General requirements.
冷冻系统和热力泵压力设备。第1部分：容器。一般要求。
Refrigerating systems and heat pumps - Safety and environmental requirements - Positive displacement refrigerant compressors.
制冷设备和热泵。安全和环境要求。容积式制冷剂压缩机。
Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: operation, maintenance, repair and recovery.
制冷设备和热泵。安全和环境要求。第4部分：操作、维护、修理和恢复。
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