介绍一套基于四电极测量原理的中低频液体阻抗测量系统，采用四电极的测量探头用于电导性液体中低频阻抗谱的测量。
An impedance spectroscopy measurement system for conductive aqueous solution at medium to low frequencies is designed using the four-electrode measurement theory.
初位选择不同会出现反演的多解性；初值选择不当，会导致低频分量、相对波阻抗及岩层厚度的错误，产生地震解释的陷附。
Improper initial value will result in errors of low frequency component, relative wave impedance and stratum thickness to cause pitfalls of seismic data interpretation.
低频成分的缺失导致重构波阻抗的失败。
And the absence of low frequency information leads to fail to reconstruct the wave impedance.
现代应用较多的吸声层大部分是阻抗过渡式结构，但是厚度有限，无法满足低频吸声的要求。
Now most sound absorption layers are impedance transition constructs, which have been used widely, but their thickness is limit and cannot meet the need of absorbing sound at low frequency.
窄缝的声阻抗严格公式以及低频近似公式都存在。
The exact formulae of the acoustical impedance of a narrow slit and its low-frequency approximation are available.
给出了V型人工电源网络规范中对阻抗模值和相角修改的内容，并对人工电源网络使用频率范围中的低频、中频和高频增加相角规范内容的原理进行了详细分析。
Gives the amendment of impedance magnitude and phase angle on AMN V-netwoks and analyses the rationale of the addition of impedance phase angle at low, medium and high frequencies.
频响也会好一些，因为低频段有效阻抗不会下降。
The frequency response will be good as well, since there is no loss in effective impedance at low frequencies.
频响也会好一些，因为低频段有效阻抗不会下降。
The frequency response will be good as well, since there is no loss in effective impedance at low frequencies.
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