In project the important function of OTDR is searching the break point and locating it.

OTDR在工程上的重大用处是能够方便地找出光纤的断点，并进行故障定位。

youdao

In project the important function of OTDR is searching the break point and locating it.

OTDR在工程上的重大用处是能够方便地找出光纤的断点，并进行故障定位。

youdao