2) through-the-earth communication
透地通信
1.
In order to improve the accuracy and computing speed of analysis of electromagnetic waves propagation characteristics in the stratified stratum,parallel algorithms of stratum medium modeling and FDTD are developed,and the parallel computing system for electromagnetic simulation of through-the-earth communication is constructed by integrating the above parallel computing process.
为提高分析电磁波在地层媒质中传播特性的准确度和时效性,开发了地层媒质建模和FDTD的并行算法,并将两个过程有机集成形成适用于透地通信电磁场仿真的并行计算系统,在搭建的并行计算平台上进行了系统测试,测试统计数据表明该系统具有良好的扩展性和并行计算效率。
3) supersonic communication,ultrasonic communication
超声波通信
4) borehole acoustic wave (seismic) perspective
井中声波(地震)透视
6) transmission sound wave
透射声波
补充资料：波导通信(见毫米波通信)
波导通信(见毫米波通信)
wave guide communication
bodao tongxin波导通信(wave guide communieation)见毫米波通信。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条