可实现宽频隔声的全向通风铁路声屏障
牛亚文,赵才友,易强,师多佳,郑钧元,陈嵘

Omnidirectional ventilation railway sound barrier capable of realizing wide frequency sound insulation
Ya-wen NIU,Cai-you ZHAO,Qiang YI,Duo-jia SHI,Jun-yuan ZHENG,Rong CHEN
图 3 超单元的隔声机理及效果
Fig.3 Sound insulation mechanism and effect of meta unit