SJ电子行业标准 SJ 50973/39-2008 实心聚四氟乙烯绝缘柔软射频电缆详细规范 SJ 50973/39-2008.Cables, radio frequency, flexible,solid PTFE dielectric,type SFF-75-4-51, detail sp... 12月31日SJ 50973/39 阅读全文