例句與造句

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
   使用由地震記錄p波初至波符號求取的小震綜合機(jī)制解資料，分析研究了華北地區(qū)4次中強(qiáng)地震前震源區(qū)及其附近小震應(yīng)力場的動態(tài)變化。
2. It's difficult to find initial p wave in a sentence. 用initial p wave造句挺難的