In 197o, researchers at Corning Glass Works were able to produce a kilometer-long ultrapure opticalfiber.
1970年，康宁玻璃厂的研究者们能生产出了光可以穿行1千米的超纯光纤。
2
Opticalfiber (fiber Optics) - an extremely fine glass fiber able to carry much greater amounts of information than copper wire carrying electric signals.
光纤-一种非常精密的玻璃纤维，它比传送电子信号的铜线能传输多得多的信息。
3
The opticalfiber is short for an optical waveguide fiber, and is a light transmission tool adopting the principle of total reflection of light in fibers made of glass or plastics.