The refractive index change might be due to the densification .
折射率的改变可能与结构致密化有关。
Urbanization process of mesh densification evolves over time .
网状密度随时间发展的都市化进程。
As cities stretch to accommodate the world 's skyrocketing population , loyal inhabitat followers are surely familiar with skyscrapers and other vertical solutions to cope with urban densification .
