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1、IEC60794-4-20®Edition1.02012-10INTERNATIONALSTANDARDcolourinsideOpticalfibrecables–Part4-20:Aerialopticalcablesalongelectricalpowerlines–Family--`,,```,,,,````-`-`,,`,,`,`,,`---specificationforADSS(AllDielectricSelfSupported)opticalcables(E):2012-204-60794IE
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