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sdh光端機(jī)的作用

光端機(jī)，就是光信號(hào)傳輸?shù)慕K端設(shè)備。由于目前技術(shù)的提高，光纖價(jià)格的降低使它在各個(gè)領(lǐng)域得到很好的應(yīng)用（主要體現(xiàn)在安防監(jiān)控），因此各個(gè)光端機(jī)的廠家就好比是雨后春筍般發(fā)展起來。但是這里的廠家大部分技術(shù)并不是完全成熟，開發(fā)新技術(shù)需要耗資和人力、物力等，這就產(chǎn)生廠…

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