the special complications of cable repair in the case of submarine cable systems laid in deep water (i.e. at depths where there is no need to use armoured cables) justify measures which would reduce the number of cable types with which repair ships have to deal
ITU-T G.631-1993由国际电信联盟 IX-ITU 发布于 1993-01-01。
ITU-T G.631-1993 在中国标准分类中归属于: M33 光通信设备。
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