At last , influences of the frequency , source point depth and conductivity ' s are concisely analyzed on low frequency wave ' s propagation characteristics in the earth ' s crust overburden 最后根据模型仿真结果数据,从频率、源点距地面深度和导电率三方面简略地分析它们对地壳覆盖层中低频无线电波传播特性的影响。
In viscoelastic media , the high frequency waves propagate and are damped more quickly than the low frequency ones , so that the shape of the wave will change continuously as it propagates 在粘弹性介质里,频率高的波相对于频率低的波而言不仅传播快,同时也衰减快,这样在传播的过程中它的波形发生连续微小的变化。
A new standpoint produced from the study is that the guided wave system in the oil well is different from the normal circular wave guide , as the fluid is a conductive medium , and it allows the higher or lower frequency waves to propagate 通过研究提出了由于井内流体为有耗媒质,油井构成的导波系统不同于一般的圆波导,可以传播高频或低频电磁波的新观点。
When the source of some wave is approaching you , the wave you received will be in a higher frequency shorter wavelength compared to the case when the source is stationary . if the source is leaving you , you will see lower - frequency wave longer wavelength 当发射波动的物体正在向你移动时你测量得的频率将会高于发射的频率但当发射波动的物体正离开你时你测量得的频率将会较低。
The gauss - ray tracing have the dynamic and geometric character . it can compose the record by calculating the high frequency wave in transverse anisotropic medium , avoiding getting the accurate ray path . it is a very steady and effective method with little calculation time and a good precision 高斯射线束正演包括地震波运动学特征和动力学特征,能有效的计算横向上不均匀介质中高频体波的合成纪录,避开了精确求取两点射线路径,大大减少了计算的时间,同时又具有较高的精度,是一个很稳健有效的方法。