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。

youdao

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。

youdao

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。

youdao

To make the light travel enormous distances, thousands of volts of electricity are sent through the cable's copper sleeve to power repeaters, each the size and roughly the shape of a bluefin tuna.

WSJ: A Dive Into the Digital Deep

Silicon photonics is a new approach to using light (photons) to move huge amounts of data at very high speeds with extremely low power over a thin optical fiber rather than using electrical signals over a copper cable.

ENGADGET: Facebook's Open Compute Project splits up monolithic servers with help from Intel, more

The real advantage is that the lack of resistance means that a given thickness of superconducting cable can carry between two and ten times as much power as the same thickness of copper.

ECONOMIST: Superconducting power cables