低频通信 meaning in Chinese

low-frequency communication

Low - frequency telecommunication cables and wires with pvc insulation and pvc sheath . part 3 : terminating cables in pairs
聚氯乙烯绝缘聚氯乙烯护套低频通信电缆电线第3部分:终端电缆
Low - frequency telecommunication cables and wires with pvc insulation and pvc sheath . part 1 : general test and measuring methods
聚氯乙烯绝缘聚氯乙烯护套低频通信电缆电线第1部分:一般试验和测量方法
Low - frequency telecommunication cable and wires with pvc insulation and pvc sheath . part 2 : cables in pairs , triples , quads and quintuples for inside installation
聚氯乙烯绝缘聚氯乙烯护套低频通信电缆电线第2部分:局用电缆