It shows in theory that the frequency domain sounding in near zone 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。

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Based on the theory of acoustics, this paper analyzes the character of geometrical spreading loss of finite line sound source on three types of directivity-monopole, intermediate pole and dipole.

根据基本声学理论，分析具有单极子、中间和偶极子三种指向性的有限长线声源的几何发散损失特性。

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A diffusion theory model induced by a line source distribution is presented for oblique-incidence reflectometry.

本文提出一种采用线光源分布的扩散理论模型用于斜入射反射测量。

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