GB/T 36221-2018航空电机用薄超轻型深沟球轴承国家标准
英文:Thin extra light annular ball bearings primarily for aircraft generators and motor-generators GB/T 36221-2018介绍: 国家标准...
英文:Thin extra light annular ball bearings primarily for aircraft generators and motor-generators GB/T 36221-2018介绍: 国家标准...