2008GB 12977-2008 Balancing machines.Enclosures and other protective measures for the measuring station
1991GB 12977-1991 Balancing machines--Enclosures and other safety measures
GB/T 12977-2008 Balancing machines - Enclosures and other protective measures for the measuring station was changed to GB/T 9239.23-2022 Mechanical vibration—Rotor balancing—Part23:Enclosures and other protective measures for the measuring station of balancing machines.