The compressed air is centralized production or dispersion production more economic answers to this problem, depending on the direction of the enterprise requirements.
压缩空气是集中生产还是分散生产较为经济这一问题的答案，取决于企业方向的要求。
2
Finally, PCF with large air holes and its applications in dispersion compensation were also discussed.
最后讨论了大空气孔光子晶体光纤的特性及其在色散补偿中的应用。
3
Basing on scalar approximation the dispersion property of photonic crystal fibers (PCF) with lower air filling fraction are investigated by an effective index approach in this paper.