分区填充均匀介质的波导
waveguide filled with locally uniform dielectrics
离层区充填
bed separation space grouting
overburden bed separation grouting
A区、B区灌装
class A and class B filling zone
北京市东城区政府
CPC Dongcheng District Committee
北京市西城区卫生局卫生监督所
Municipal Institute of Supervision
Health Bureau of Xicheng District
滨州市城区
urban areas of Binzhou city