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。
Panoramic imaging system is one of the technological difficulties in designing flight simulators.
全视场的视景显示系统是飞行模拟器设计实现的一个技术难点。
However, apart from the technological difficulties of preparation, casting resins affords a further wide field of application.
然而，除了制备工艺的困难外，模浇树脂有更广泛的应用范围。
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