Home / Standards / GB/T 9149-1988 GB/T 9149-1988 Abolished General specification for magnetic particle clutch 磁粉离合器通用技术条件 Standard Type GBT ICS 21.120.20 CCS J19 Status 废止 Issue Date 1988-05-06 Implementation 1989-01-01 Responsible Dept 国家标准委 Drafting Unit N/A