Feng Pan.Qiqi Han.Jing Ma Measurement of scintillation and link margin for laser beam propagation on 3.5-km urbanised path 2007(1是什么意思_Feng Pan.Qiqi Han.Jing Ma Measurement of scintillation and link margin for laser beam propagation on 3.5-km urbanised path 2007(1在线翻译_英语_读音_用法_例句