So, in order to reasonably exploit, utilize and protect the ground water resources, it is important to study the ground water in North China within a large-scale domain.
因此，从大区域角度研究华北平原地下水，对合理开发、利用、保护地下水资源，具有十分重要的意义。
The results may better reflect the non-stationarity of ground motion in time domain and are closer to reality than those by wave theory and stationary random vibration theory.
由于这种方法能较好地反映地面运动的时域非平稳性，所以得到的计算结果更真实。
The EMP cortically induced current in coaxial cables near the ground is analysed by using Finite-Difference Time-Domain method in this paper.
本文采用时域有限差分法，分析电磁脉冲作用下，地面附近同轴电缆所感应的外皮电流。
应用推荐