相位

Extract information based on the instantaneous features : In the center is one of the instantaneous rate of the power spectral density of the maximum, is a center to the absolute value of the instantaneous rate of the standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component absolute standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component standard deviation, In the center is one of the non-weak signal of the absolute value of the instantaneous frequency standard deviation, a signal to one of the instantaneous frequency of the power spectral density of the maximum, According to 16QAM and QPSK signals XI axis projection in the different performance parameters raised.

提取信号七个基于瞬时信息的特征：零中心归一化瞬时幅度功率谱密度的最大值，零中心归一化瞬时幅度绝对值的标准偏差，零中心非弱信号段瞬时相位非线性分量绝对值标准偏差，零中心非弱信号段瞬时相位非线性分量标准偏差，零中心归一化的非弱信号段瞬时频率绝对值的标准偏差，一个信号段的归一化瞬时频率功率谱密度的最大值，根据信号 QPSK 和16QAM在 XI 轴投影的不同表现，提出特征参数。

Optimal design of rhomb-type retarder can improve achromatism according to the principle that the light arising total reflection has a phase transformation in the medium surface.

根据光在介质表面全反射时发生相变这一原理，分析了一个具有3个全内反射面的菱体型延迟器件，得出了相位延迟δ与全内反射角θ和相位延迟δ与介质折射率n的关系。

The result indicates that in the designed center of the wavelength, the retarder is not only confined within the low dispersive medium, but high-index material with higher dispersion can also obtain good achromatism, and at the same time the bigger angle of total reflection can improve achromatism of the phase retarder.

从全内反射相变方程出发，以菲涅尔菱体为例，分析了消色差相位延迟器的相位延迟量随折射率变化的光谱特性，结果表明：在所设计的中心波长处，延迟器件不仅仅局限于选择低色散的材料，色散较大的高折射率材料制作的延迟器件也可以具有良好的消色差性，且较大的全内反射角有利于改善延迟器件的消色差性。

The scattering properties of particles with different shape parameters are simulated respectively in the modes of reflection and refraction. Both in the modes of reflection and refraction, the phase difference of non-spherical particle's PDA signal is the unbiased estimate of the corresponding phase difference of ideal spherical particle, and the standard deviation of angle roughness scale on particle surface impacts little on the distribution of phase difference.

本文通过物理光学的方法分析了非理想球形粒子的散射特性，利用物理光学中的稳相点理论，导出了非理想球形粒子散射光的相位表达形式，分析了非理想球形粒子的形状对PDA信号相位及相位差的影响，建立了非理想球形粒子的尺寸分布与PDA信号相位差分布之间的关系。

The principle of phase-matching and the technology of single-axis and double axises phase-matching as well as the phase matching width is introduced;The main features and optical properties of Nd:YVO_4 and KTP are given.

介绍了相位匹配原理，分别对单轴和双轴晶体的相位匹配、相位匹配宽度做了详细分析；介绍了实验所用的激光晶体板条状Nd：YVO_4的基本特性和光学特性及倍频晶体KTP的光学特性。

I randomly selected16 accurately timed charts of gay men from my files; two had Mars/ Uranus conjunctions, one had a Mars/ Uranus square, one a Mars/ Uranus trine and three Mars/ Uranus sextiles.

我随意地从我的档案中挑选了16张有着准确出生时间的同性恋男人的命盘；两人有火星/王星合相，一个有火星/王星的刑相位，一个火星/王星的拱相位和三个火星/王星的六合相位。

A GVF snake model was used to link discrete edges, the linked edges were kept well accordance with fringes of phase map. 4Phase unwrapping algorithm based on edge detection is suitable to well separated fringes, the unwrapped phase can be rewrapped to the original phase map.

对一幅干涉相位图的滤波结果表明，该算法很好的抑制了斑点噪声，极大的降低了残余点的数量，保持了条纹边缘和相位细节信息，并使绝对相位保持在一定的动态范围。

The measurement model for the retardation distributing of the quarter wave plate was introduced by Muller matrix and Stokes parameter. And four patterns with phase shifting of 90°in turn were eatched simultaneously by an especial spatial splitting phase-shifter.

1／4波片相位延迟分布的动态测量，通过密勒矩阵和斯托克斯参量法对一种1／4波片的相位延迟分布的测量模型进行了推导，并设计出一种空间分光移相器，取代一般测量系统中的检偏器，使得系统能于瞬间同时采集四幅具有90°移相步长的干涉图，避免了环境振动对测量的影响，从而可以对1／4波片的相位延迟分布进行动态在线测量。

Through analysis of vane-type continuously variable cam phaser, the sort and design are introduced about the structure such as vane, seal, lock pin and oil passage, and it is revealed about the different design of the structure of intake and exhaust cam phaser and the select of material .

对叶片式连续可变凸轮相位器系统进行了分析，分别从叶片、密封、销止销和油道布置方面对叶片式连续可变凸轮相位器本体结构着重进行了归类与分析，并阐述了进、排气相位器的不同设计考虑，明确了材料的选取原则。

Methods of fast Fourier transform and phase unwrap were used to demodulate the phase of the interferogram obtained from experiment, distortion of wavefront disturbed by temperature fluctuation which equals to phase shift induced by refractive index change was calculated, and a way of axisymmetric temperature field reconstruction was put into reshowing a layer of the gas temperature distribution.

通过实验得到干涉条纹，用CCD摄入计算机，经Matlab编制傅里叶变换、相位去包裹和其他数值计算程序，解调干涉条纹的相位，计算出温度扰动产生的波面畸变量，它等于折射率变化引起的相位偏移值，用轴对称气体温度场重建方法，再现了气体温度场一个层面上的温度分布。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。