A.線對(duì)l B.線對(duì)2 C.線對(duì)3 D.線對(duì)4
A.光纖模場(chǎng)直徑不一致 B.兩根光纖芯徑失配 C.纖芯截面不圓 D.纖芯與包層同心度不佳
A.1000mm B.1500mm C.1800mm D.2000mm