Petroleum and natural gas industries - Rotary-type positive displacement compressors - Part 1: process compressors (oil-free).
石油和天然气工业。旋转型容积式压缩机。第1部分：加工压缩机（无油）
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 - 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。
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