seismometer is a sensitive instrument that measures ground movement, shaking, and seismic waves caused by earthquakes, volcanic eruptions, explosions, or ocean tides, vintage illustration, 19th century 1890s - 地震學 幅插畫檔、美工圖案、卡通及圖標
history, seismology, movement of earth particles during the january 15, 1887, earthquake which struck tokyo, japan, vintage illustration, 19th century - 地震學 幅插畫檔、美工圖案、卡通及圖標
child is afraid of earthquake, worried child is holding his head to protect his head. items shake due to earthquake shaking. - 地震學 幅插畫檔、美工圖案、卡通及圖標
black and white, child is afraid of earthquake, worried child is holding his head to protect his head. items shake due to earthquake shaking. earthquake concept at home - 地震學 幅插畫檔、美工圖案、卡通及圖標兒童, 安全, 地震