Home / Standards / GB/T 9239-1988 GB/T 9239-1988 Abolished Balance quality of rigid rotors--Determination of permissible residual unbalance 刚性转子平衡品质 许用不平衡的确定 Standard Type GBT ICS 21.120.40 CCS N73 Status 废止 Issue Date 1988-06-01 Implementation 1989-01-01 Responsible Dept 国家标准委 Drafting Unit N/A