发布者:dong125612来源: 互联网关键字:光时域反射仪otdr手机看文章 扫描二维码 光时域反射仪(OTDR)是通过对测量曲线的分析,了解光纤的均匀性、缺陷、断裂、接头耦合等若干性能的仪器。它根据光的后向散射与菲涅耳反向原理制作,利用光在光纤中传播时 ...
The Philippine National Police (PNP) is searching for the people behind tutorial how to make prohibited boga (improvised cannon) now circulating online. In Jun Veneracion’s Wednesday report on 24 Oras ...