The appeal lies in their strength (they are up to 100 times stronger than steel) and their ability to conduct both heat and electricity.
碳纳米管在强度和导热、导电性能方面具有优异性能，它们的强度是钢材的100倍。
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。
They conduct heat and even electricity.
钻石可以导热，甚至能导电。
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