Of the existing phase compensation methods, the phase gradient autofocus (PGA) algorithm is a better one.
在现有的相位补偿方法中，相位梯度自聚焦（PGA）算法是较好的一种。
The primary relationship between the size of the focal sp ot and RMS of phase gradient was also given by simulation calculation.
通过模拟计算，给出低频位相噪声的均方根梯度与聚焦光斑尺寸的初步规律。
In the algorithm, the phase gradient algorithm (PGA) was performed, and the signals of multiple scatters on a few range bins were utilized.
该算法采用了相位梯度算法(PGA)的处理结构，利用了多个距离单元上的散射点信号。
If the scatter selected in phase gradient algorithm(PGA) algorithm is not isolated, the accuracy of the phase error estimation will be degraded.
当相位梯度算法挑选的散射点不是孤立散射点时，导致相位误差估计的准确性下降。
It is found that the canonical momentum is directly proportional to the gradient of space phase.
发现正则动量与空间相的梯度成正比。
This article mainly introduces the prediction method of the flow pattern, pressure gradient and liquid holdup of two phase flow in horizontal pipelines.
本文着重介绍水平管中这种两相流动的流动型态、压力梯度和持液率的预测方法。
The turbulence of gas phase was modeled by the gradient simulation approach.
采用梯度模拟来考虑气相可压缩性对气相湍流的影响。
The selection of moving phase, gradient eluting procedure and line relation of sampling concentration with peak height were discussed.
研究了流动相的选择，梯度淋洗程序的最佳化以及进样浓度与峰高的线性关系。
The effects of mobile phase composition, flow rate, column temperature, gradient ramp, ph value, salt concentration, and buffer concentration on capacity factors (K ') were respectively discussed.
对流动相组成、流率、柱温、梯度速率、pH值、盐浓度以及缓冲液浓度对容量因子(K')的影响分别进行了讨论。
The experiment shows that this method is suitable for the measurement of the phase object with the small sectional size and the small temperature gradient.
实验表明此方法适用于几何尺度较小或温度梯度较小的三维位相物体温度场的散斑照相测量。
The normalized full gradient and phase of gravity anomalies have been studied by potential field conversion and fast Fourier transform in wave-number domain.
用波数域的位场转换和快速傅立叶变换理论研究重力归一化总梯度和归一化相位；
Chloroform - tetrahydrofuran - water (500:500:8) was used as mobile phase for the gradient elution of other strongly retained substances.
继用氯仿-四氢呋喃-水(500：500：8)为流动相，梯度洗脱其他强保留组分。
METHOD HPLC gradient elution method was used with methanol-water as the mobile phase to determine the contents of triptolide in its root, branch and leaf at different periods of its storage.
方法以甲醇-水为流动相，采用HPLC梯度洗脱法，测定了雷公藤药材的根、枝、叶中雷公藤甲素在不同存贮期的含量。
SEM indicates that the shape of multi-metal phase appears to be island-like and distributes in continuous gradient clouds.
SEM形貌表明多金属相形貌为小岛状，成连续梯度云状分布。
The phase mapping method of a field inhomogeneity based on an Z axis pulse field gradient and polynomial fitting procedures of the axial shimming coil currents were described.
通过对Z轴磁场梯度和匀场线圈电流的多项式拟合，以获得磁场不均匀而引起的相位分布。
The gradient elution is reasonable when the retention time is 2.3 times after the appearance of prominent peak with initial mobile phase acetonitrile-water (40:60).
用初始流动相乙腈-水(40：6 0)洗脱至主峰出峰保留时间的2.3倍时开始进行梯度洗脱比较合理。
The extracted phenols were detected by gradient eluted mobile phase and UV wavelength programming HPLC. The precision, accuracy and detection limits of established methods were determined.
采用流动相梯度淋洗，紫外检测器波长编程的方法测定富集后的酚类化合物，并测定了方法的精密度、准确度和检测限。
The elution mode, composition of the mobile phase, content of the organic acid and the flow-rate of the mobile phase were optimized and thus a new flow rate gradient was proposed.
对制备色谱的洗脱方式、洗脱剂组成、浓度、洗脱速度等参数进行优化，提出并应用了流动相速度梯度洗脱方法。
Objective to establish a reversed phase high performance liquid chromatography gradient elution method for determination of the related substances in allopurinol sodium for injection.
目的建立测定注射用别嘌醇钠有关物质的高效液相梯度洗脱法。
Conclusions the reversed phase high performance liquid chromatography gradient elution method is simple and accurate for the determination of the related substances in allopurinol sodium injection.
结论高效液相梯度洗脱法可用于测定注射用别嘌醇钠中的有关物质。
An incomplete Cholesky-conjugate gradient method is used to solve the pressure equation of two phase bi-dimension model.
本文把不完全乔利斯基——共轭斜量解法用于求解二维二相模型的压力方程。
NH2 column was used with the mobile phase of 0.1% trifluoroacetic acid-acetonitrile by gradient elution.
采用氨基色谱柱，流动相为0.1%三氟乙酸-乙腈(梯度洗脱)。
The adenosine in functional food was determined by reversed-phase high performance liquid chromatography and linearity gradient elution in this paper.
本文应用反相高效液相色谱线性梯度洗脱法对保健品中的腺苷进行分离腺苷测定。
The coating with high bond strength was synthesized by means of treatment of the gradient liquid phase sintering or medium temperature reactive sintering.
通过梯度液相烧结或中温反应烧结处理，热喷涂层具有很高的结合强度。
Based on the theory of two-phase flow, the equation of the pressure gradient is found for the short pipe in cavitation jet cutting set.
基于两相流体动力学的理论，建立空蚀射流切割装置中短管内的压力变化梯度的基本方程式；
The main contributions of this thesis are as follows:(1) An edge feature detection model based on gradient and phase (GP model) is proposed.
本文的主要贡献如下：（1）提出了梯度和相位信息相结合的边缘特征检测模型—GP模型。
The results show that the liquid phase sintering necessary for coating stability can be realized by gradient designing, the viscous flow of ordinary liquid ph...
结果表明，采用梯度设计可实现涂层稳定成形所需的液相烧结，避免了常规液相烧结时涂层的粘弹性流动。
The method consists of three steps. Firstly, image segmentation is achieved by watershed transform based on phase congruency gradient and foreground marking to extract image objects.
首先，利用基于相位一致梯度与前景标记的分水岭变换进行影像分割，提取图像斑块；
The basic condition of gradient liquid phase sintering, the micro structure and the poperty of coating bonding are discussed.
分析了喷涂层梯度液相烧结的基本条件 ，并观察了其显微组织及其结合性能。
A phase-only direct data domain least square (D3LS) algorithm based on the nonlinear conjugate gradient method was proposed.
提出一种基于非线性共轭梯度法的唯相直接数据域最小二乘算法。
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