It shows in theory that the frequency domain sounding in nearzone of the line current source is possible.
通过对计算结果的分析，在理论上说明了线源频率域近区测深的可行性。
2
In time domain on the nearzone of vertical magnetic source, the transient field form is decided by fractional power of the angular frequencies for field source.
在时域中，磁源近区瞬变场的时间特性取决于场源所含低频谱的分数幂。
3
The vadose zone supplies plant roots near the surface with water.