GB/T 39519-2020高应力液压件圆柱螺旋压缩弹簧技术条件标准
英文:Hydranlic cylindrically helical compression spring with high working stress—Technical specifications GB/T 39519-2020介...
英文:Hydranlic cylindrically helical compression spring with high working stress—Technical specifications GB/T 39519-2020介...