最后还讨论了时域法测量电极阻抗的激励信号的选择、测量频率上、下极限和噪声影响等问题。
The problems about the selection of excitation signal, limits of measurement frequency and noise influence have been discussed.
将水滴从不同高度滴在平板音箱板面的各个位置，根据等动量法，建立水滴直径同平板音箱振动信号振幅之间的统计函数关系。
According to the equal-momentum principle, the regression relation between the diameter of the water-drop and the amplitude of the signal can be established.
文章用方框图明确了输入信号、反馈信号等概念，分析了反馈极性的决定因素和直接效果，改进了传统的“瞬时极性法”。
The paper definites input signal and feedback signal etc. conception using block diagram. Analyses decisive factor and direct effect of extreme nature for feedback.
实践证明该法具有传感器安装方便、转换电路简单、价格低廉且获得的基准信号稳定可靠等优点。
It has proved that there are following advantages: the sensor is easy to install, the circuit is simple to switched. the cost is low and the obtained reference signal is reliable.
传统热线法的数据处理方法，不能抑制外界信号干扰及有效测量区间选取不当等因素对测量结果的影响。
By the tradition method of data processing of the heat wire method, the influences caused by factors such as interference signals and incorrect choice of effective test region may not be restrained.
多频激电相对相位谱法充分发挥了伪随机多频信号作为电法勘探场源的优点，可在找水，找矿等勘探中发挥重要作用。
PRMF relative phase spectrum IP show the advantage of PRMF signal as source of electrical exploration, can play important in groundwater exploration, mineral exploration, and so on.
它比常用的球击法具有激振能量大，信号接收效果佳等优点。
It has some advantages of larger exciting energy and higher efficiency in receiving signals over the conventional ball-shooting method.
结果表明，利用GC-MS法对加氢尾油中多环芳烃进行分析，具有选择性高，响应呈线性，芳烃组分信号不受烷烃干扰，分析时间短和精密度好等优点。
The results showed that the GC-MS had the advantages of high selectivity, rapid analysis, high precision, good linear response, and low interference on PAH signals, etc.
通常采用共价键法、交联法、包埋法等对脲酶在信号转换器表面进行固定。
Generally urease is immobilized onto the surface of signal transducer by covalent attachment, cross-linking, entrapment and so on.
首先，本文从信号参数(幅度、频率、相位)估计入手，研究了直接法、细化频谱法和高精度FFT法等算法。
First of all, starting with the estimate of signal parameter (e. g. amplitude, frequency and phasic), it makes a research in algorithms of direct, subdivide the spectrum, high-precision FFT and so on.
首先，本文从信号参数(幅度、频率、相位)估计入手，研究了直接法、细化频谱法和高精度FFT法等算法。
First of all, starting with the estimate of signal parameter (e. g. amplitude, frequency and phasic), it makes a research in algorithms of direct, subdivide the spectrum, high-precision FFT and so on.
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