频率分析法

根据计算机模拟Doppler血流合成信号，对频率分析法、过零检测法和时域估计法进行了对照分析，说明时域估计法优于过零检测法，与频率分析法相当，而系统较易实现。

With computer generated Doppler signals , methods of frequency-analysis , zero-crossings and time-domain estimation have been compared . Finally it is pointed out that time-domain estimation method is not only easy to realize , but also as good as frequency-analysis and better than zero-crossings .

系统理论与频率分析法在水资源评价中的应用

Application of Systematic Theory and Frequency Analytic Approach on Water Resource Evaluation

频率分析法在水文预报方案中的应用

Application of Frequency Analysis Approach in Hydrology Forecasting Scheme

建议按频率分析法考虑对附近建筑物的影响。

The method of frequency analysis was recommended .

频率分析法适用于具有长系列的泉水流量观测资料的泉域的水资源评价。

Frequency analytic approach is suitable to groundwater resource evaluation with long series spring flow .

用频率分析法，求出设计典型年净灌溉需水量，并以此推求出设计典型年的设计灌溉定额、灌水定额与设计灌溉制度。

Using frequency analysis , we also calculate the designed irrigation quota and designed irrigation system .

建筑给排水设计中常常采用的暴雨强度公式即来自频率分析法。

The stormy calculation common used in building rainwater discharge design is derived from the frequency analysis .

对于研究低渗透、特低渗透砂岩储集层微裂缝分布规律，渗透率异常频率分析法是有意义的。

Micro-fractures distribution in extremely lower permeable sandstone reservoirs of Yanchang Formation and its geologic significance , Ordos Basin , Northwest China ;

通过磁模块设计提出了频率分析法，对比了在确定最佳炸点时与阀值法和能量比较法的优缺点；

Frequency analysis is also presented and compared with the threshold method and energy comparing method in view of the optimum explosion time .

本文以陕北能源化工基地巴拉素水源地为例，采用系统理论和频率分析法对地下水资源进行了计算。

This paper introduces the systems theory and frequency analysis approach , which bases on the calculation of groundwater resources in Balasu Northern Shaanxi Energy .

归纳了3种不同途径的风险率计算方案：第一种为实测坝前年最高水位序列的频率分析法，第二种基于已有的设计洪水成果，第三种基于洪水随机模拟模型生成的大样本序列。

Three different schemes were proposed , which are based on recorded water level series , design flood and reservoir inflows series generated by stochastic models respectively .

采用干支流流量叠加法，计算入库洪水系列，以频率分析法计算入库设计洪水。

The reservoir inflowing flood series are computed by flood superposition of the main stem and branch floods and the reservoir inflowing design floods are computed by frequency analysis method .

以青岛大港观测站32年增水过程为例，探讨风暴增水工程设计参数的频率分析法，进行了不同阈值序列及各种理论线型的分布拟合。

By taking the 32 year storm surge elevation at Qingdao Dagang Tidal Station as an example , this paper discusses the probability analysis method for calculating storm design parameters in engineering .

针对故障暂态行波特性，无论是用单纯的频率分析法还是用单纯的时域分析法都不能准确描述暂态行波这类非平稳变化信号。

For the feature of fault transient traveling wave , whether it is with a simple frequency analysis or with a simple time-domain analysis can not accurately describe the transient traveling wave which changes non-smoothly .

TTC系统中测距误差的频率特性分析法

Use Frequency Character to Analyse Range Error of TTC Systems

以频率特性分析法为理论基础，研究了利用Excel中的单变量求解法进行系统串联校正的计算方法与步骤。

Based on the theory of frequency characteristic analysis of autocontrol system , the method and step of tandem connection correction were studied by using the tool of univariate soling in Excel .

检测变压器绕组变形的方法，国际上较早提出的是低压脉冲法（LVI），其后有频率响应分析法（FRA）。

There are two methods of detecting the winding deformation faults in power transformer , the Low Voltage Impulse method ( LVI ) and the Frequency Response Analysis method ( FRA ) .

目前，监测变压器绕组变形的方法主要有低压脉冲分析法（LVI），频率响应分析法（FRA）和阻抗分析法。

The low voltage impulse method , frequency response analysis method and short-circuit reactance method , which can be used to measure and diagnose the deformation of power transformer winding , are introduced in the paper .

本文根据陶瓷厂生产工艺特点，运用FHA法即频率层次分析法，对陶瓷厂工艺控制提出了一种新的分析方法。

In this paper , a new analytic option based on FHA method ( the Method of Frequency and Hierarchy Analysis ) for technical control of the ceramic factory is put forward in view of its production characteristics .

利用频率响应分析法测量变压器绕组变形的试验研究

The Study of Transformer 's Winding-distortion by Frequency Response Analysis

变压器绕组变形的频率响应分析法综述

Survey of Frequency Response Analysis on Winding Deformation of Transformers

目前判断变压器绕组变形主要采用频率响应分析法。

The main way on the detection of transformer winding deformation is FRA method .

频率响应分析法是诊断电力变压器绕组变形的重要方法。

Frequency response analysis is an important method to detect the transformer winding deformation .

汽车防抱控制系统的分析方法有频率域分析法、相平面分析法等。

The methods for analysing automotive antilocked brake system include frequency domain analysis and phase-plane analysis , etc.

介绍了应用频率响应分析法检测变压器绕组变形的两个实例。

The two examples of the fault diagnosis of transformer winding deformation applying frequency response analysis are introduced .

介绍了用频率响应分析法现场测量变压器绕组变形中总结出带有规律性的特点。

Regular characters summed up from transformer winding deformation test by using frequency response analysis method are described .

现阶段频率响应分析法的数据测试技术已经日趋成熟，但数据分析技术还存在问题。

At present , the data testing technology is becoming mature , but the data analysis technology has problems .

本文介绍了几种判断变压器绕组变形的辅助分析方法，补充了频率响应分析法在判断绕组变形上的不足。

This paper introduces several auxiliary test methods to judge winding deformation , therefore the judgement can be more exactly .

应用频率响应分析法判断变压器绕组在遭受短路冲击后是否发生严重变形具有重要的意义。

It 's significant to use frequency response analysis ( FRA ) to determine whether the windings of power transformers have serious deformation after short-circuit current shock .

首次提出了用频率谱分析法分析墙体表面换热过程及推导墙体表面换热系数的实验方法。

The accurate method to determine wall surface heat transfer coefficient , which is an important parameter in calculation for building energy consumption of HVAC system , doesn t exist by now .