【电学】抗 震 设 防

seismic belt; seismic zone; earthquake zone

WenChuan Earthquake

earthquake

Tangshan Earthquake

focus (of an earthquake), seismic origin

earthquake wave【地震】;seismic wave【地震】;wave of earthquake【地震】

earth light【地震】;earthquake light【地震】

Witness to the Tangshan Earthquake