Home / Standards / GB/T 6557 GB/T 6557 Abolished Mechanical vibration - Methods and criteria for the mechanical balancing of flexible rotors 挠性转子机械平衡的方法和准则 Standard Type GBT ICS 21.120.40 CCS J04 Status 废止 Issue Date 2009-04-24 Implementation 2009-12-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委