They conduct 150 times the electricity of similarly sized copper wires. However, because of technological difficulties, the commercial development of superconductor power-cable systems has been slow.
相比同样粗细的铜导线，他们的输电能力高达150倍，但因为技术困难，超导体输电的商业应用发展缓慢。
Copper conductor XLPE insulated fine steel wire armored low-smoke and non-halo sheathed Flame-retardant power cable.
铜芯交联聚乙烯绝缘细钢丝铠装低烟无卤护套阴燃电力电缆。
Copper conductor XLPE insulated fine steel armored PVC sheathed Flame-retardant power cable.
铜芯交联聚乙烯绝缘细钢丝铠装聚氯乙烯护套阻燃电力电缆。
Copper conductor XLPE insulated low-smoke and non-halo sheathed Flame-retardant power cable.
铜芯交联聚乙烯绝缘低烟无卤护套阻燃电力电缆。
Laser beams could be sent down fiber-optic cable to power anything currently powered by copper wire.
镭射光也可以通过地下光缆来传输能量，来代替铜线传输。
Laser beams could be sent down fiber-optic cable to power anything currently powered by copper wire.
镭射光也可以通过地下光缆来传输能量，来代替铜线传输。
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