A.通信用室(野)外光纜 B.特殊光纜 C.海底光纜
A.0.22dB/km B.0.31dB C.0.36dB/km D.0.4dB
A.填充式結(jié)構(gòu) B.骨架式結(jié)構(gòu) C.帶狀式結(jié)構(gòu)