Dendrite growth has been simulated with the phase field method and finite difference schemes on a two dimensional rectangular domain with a uniform square mesh.
采用相场模型和有限差分方法，模拟了过冷纯金属熔体的枝晶生长，计算区域为二维正方形均匀网格。
A novel method of phase difference estimation under Gaussian noise is proposed to improve the precision of Coriolis mass flowmeter.
为提高其精度，提出了一种高斯噪声背景下的科氏质量流量计相位差估计新方法。
By limited difference method, two dimensional, two phase polymer flooding numerical model is built.
并通过有限差分方法，建立了二维两相聚合物驱数值模型。
A method of digital calibration in the amplitude and phase imbalances of sum and difference channels, and of angle error normalization processing is provided.
并提供了一种和差支路幅相不平衡数字校正和角误差归一化处理的方法。
Aiming at the abnormity of the phase and groove number, hardware redundancy and difference method is used to forecast time series and the problems are resolved.
针对定位传感器应用中相角和齿槽数信号异常的问题，利用硬件冗余和差分法进行时间序列预测，解决了该类问题。
On the basis of this method, and taking advantages of the methods-time-domain translation as well as the window length change, the uniform formula for the phase difference correction is derived.
在此基础上，将窗中心平移法与时域平移和改变窗长法综合应用，推导出相位差校正的统一公式。
In the paper, the mathematical model for the proposed method is deduced, and the mean and variance of the acquired carrier difference phase of the proposed method are analyzed and simulated.
给出了该方法提取两导航台载波差分相位的数学模型，并分析了该方法提取的差分相位的均值及误差，进行了计算机仿真。
Compared with the original two kinds of Phase-Difference Correction, only one sequence of time-domain signal is sampled and FFT analysis of same points is performed twice in this method.
与原两种相位差法相比，这种方法只采一段时域信号，且进行两次相同点数的FFT分析。
This article introduced the basic theory and method of measuring the velocity of light using the method of phase difference and how to measure the velocity of light using phase difference in air.
介绍了一台自制的利用相位差法测量光速的仪器的基本原理和方法，并通过对光在空气中的传播速度的测定，使大家对用相位变化测量光速仪器有所了解。
A new single-station passive location method combining phase difference and UKF algorithm is presented.
提出了相位差与无迹卡尔曼(ukf)算法相结合的单站无源定位方法。
Moreover, the difference of the internal precipitation method and the external adding method for the second phase particles in steel was generalized.
同时，对钢中第二相粒子的内部析出法和外部加入法的差异做了简单的概述。
The principle of spectrum correction based on difference is studied. A novel method by use of phase phase difference, namely the method of translation of window center is proposed.
研究了基于相位差的频谱校正方法的基本原理，提出一种利用相位差校正的新方法———窗中心平移法。
For the problem of the parameter estimation of multi-component chirp signal in the additive colored noise, a method based on phase difference and time-frequency signal filter was proposed.
针对加性色噪声背景下的多分量线性调频信号参量估计问题，提出了基于相位差分的时频子空间方法。
In this paper, the single observer-passive location method using phase difference change rate is introduced based on existing methods.
该文在现有单站无源定位方法的基础上，介绍了相位差变化率定位法。
Signal recording method, phase difference detecting circuit, and information apparatus.
信号记录方法，相位差检测电路，及信息装置。
The time history curves and the phase diagram for the oscillation are obtained by solving the differential relation between vibration amplitude and tensile load with finite difference method.
应用有限差分法求解球壳振动的振幅和外加荷载之间的微分关系，得到了球壳振动的时程和相图。
One method is phase difference correction of partly FFT; the other is FFT frequency correction with quadratic interpolation.
一是利用分段FFT的相位差修正算法，二是基于二次内插的频率FF T校正法。
A measurement system for sine signal phase difference is designed by using DSP and digital correlation method.
设计一个采用DSP技术和数字相关法测量两路正弦信号相位差的检测系统。
The results of simulations and experiments have proven that this method has extremely high precision while calculating the phase difference.
实验结果表明该方法在求取相位差时具有极高的精度。
The voltage difference of same-phase caused by different transformer wiring group was analysed. And the solving method was also provided in this paper.
分析变压器由于接线组别的不同引起的各个同相的电压差，以及解决方法。
Calculation method about phase difference and amplitude in interference pattern of convergent light has been proposed.
提出了晶体锥光干涉中两相干光的位相差和振幅的计算方法。
Considering the spread spectrum orientation systems using difference carrier phase to measure distance, this paper proposed a method for acquiring difference carrier phase by using pilot symbol.
考虑利用载波相位进行测距的扩频无线电导航系统，该文提出了一种基于导引符号的两导航台载波差分相位的提取方法。
Before the design of digital circuit, measurement method of phase difference is discussed. Two-way zero passage phase detector is chosen as solution finally.
在正式进入数字电路设计之前，先讨论了相位差测量方法，并选定双向过零鉴相作为实现方案。
It provides a new method to estimate phase difference for test of characteristic parameters of fluid and measurement of a ship heave in deep-sea mining.
本文为实时估计两列波相位差提供了新方法，在流体物理检测、深海采矿船升沉运动位移等的检测中具有良好的作用。
Based on the magnetic grid torque transducer and a new computer aided method to measure phase difference, a new measuring system for dynamic torque is developed.
采用磁栅转矩传感器和一种新的微机辅助相位差检测方法，研制了一套新型动态转矩测量系统。
When the curvature is 0, we found that the difference between the phase field method and the finite difference method is very small.
我们发现与有限差分法相比较，在曲率为0，即边界为一条直线的时候，两者的差别很小。
So this technique has high sensitivity which phase difference method has and is hardly affected by the variation of the sound speed of the fluid, just as frequency difference method is .
因而该方法具备了相差法检测灵敏度高和频差法受被测流体声速变化影响小的特点。
A new virtual calibrator for instrument transformer is presented. A phase difference correction method is applicable to correct electronic instrument transformer.
介绍了一种新型的虚拟互感器校验仪，它采用相位差校正法解决了校验电子式互感器的问题。
A new virtual calibrator for instrument transformer is presented. A phase difference correction method is applicable to correct electronic instrument transformer.
介绍了一种新型的虚拟互感器校验仪，它采用相位差校正法解决了校验电子式互感器的问题。
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