石油测井中子发生器及中子管技术条件
Technical specifications of neutron generator and neutron tube for petroleum well logging
2007-10-08
HG/T 3124-2020
焊接金属波纹管釜用机械密封技术条件
Specifications of welded metal-bellows mechanical seal for stirred vessel
2020-04-16
DIN 8905-3
Tubes for refrigerating systems with hermetic and semi-hermetic compressors; additional technical delivery conditions for capillary restrictor tubes
带有密封和半密封压缩机的制冷系统用管；毛细管节流管的附加技术交付条件
1983-10-01
DIN 8905-1
Tubes for refrigerating systems with hermetic and semi-hermetic compressors; outside diameter up to 54 mm; technical delivery conditions
带有密封和半密封压缩机的制冷系统用管；外径不超过54毫米；交货技术条件