initial p wave中文什么意思

例句与用法

1. By using the data of comprehensive mechanism solutions of small earthquakes and suing the signs of initial p wave recorded by seismic recording , the dynamic changes of stress field of small earthquakes occurred before four moderate - strong earthquakes in north china have been studied
   使用由地震记录p波初至波符号求取的小震综合机制解资料，分析研究了华北地区4次中强地震前震源区及其附近小震应力场的动态变化。