urban n dispersion 城市疏散
This paper describes the current study on vehicle pollutants dispersion in the urban street canyon.
本文叙述了目前城市街道峡谷内机动车污染物扩散的研究现状。
The frequency time selective fading resulted from multipath dispersion and Doppler frequency shift is an important characteristic of urban mobile radio channel.
由多径色散及多普勒频移造成的频率—时间选择性衰落是城市移动无线信道的一个重要特性。
Coal is the most important part of energy structure and the natural surroundings in poor dispersion of pollutants in the air are the main reasons for serious pollution in Lanzhou urban.
以煤为主的能源结构和不利于污染物扩散的自然环境是兰州市区大气污染严重的主要原因。
应用推荐