例句與造句

1. Abstract : propagation characteristics of r wave in a pavement structures are analysed in this paper . based on the propagation characteristics of r wave , the horizontal propagation wave is simulated by using r wave , the vertical propagation wave is also simulated by using body wave in calculating dynamic response of pavement structures . the availability and accuracy of dispersion curves measured by sasw in pavement structures is analysed by using the presented method used to calculate dynamic response
   文摘:利用有限單元法分析了道路結(jié)構(gòu)的r面波傳播特性：在深度方向上衰減較慢，傳播較深，波動性大.提出了在道路結(jié)構(gòu)動力響應(yīng)計算中，利用面波來模擬水平向傳播波，利用體波來模擬豎直向傳播波.通過算例來驗證該方法的可靠性和精確性，并利用這一動力響應(yīng)計算方法分析了道路結(jié)構(gòu)表面波測試中所獲彌散曲線的可靠性
2. It's difficult to find propagation wave in a sentence. 用propagation wave造句挺難的