相位的

It can get the three-dimensional profile of the object surface effectively. Because of the cragginess of the three-dimensional surface when sine grating is projected the image of the sine grating is modulated and the modulated image is taken by a CCD camera with an angel compared to projecting direction. After the phase shift measuring method, the phase is gotten. Because the phase is calculated by the phase shift measuring ranges from –π to +π it isn't continuous. The phase unwrapping is necessary to recover the continuous phase about the object shape.

这种方法采用结构光照明，将正弦光栅图像投影到被测物体表面，用与投影方向成一定角度的CCD摄像机获取受物体表面面形调制的变形光栅像，根据数字相移算法计算出相位分布，由于从相移计算的相位被截断在反三角函数的主值范围内，因而是不连续的，必须通过相位展开恢复出连续相位分布，由相位－高度关系最终求出物体轮廓的三维数据信息。

The procedure can suppress the propagation of the errors and then unwraps through the phase inconsistencies.

其优点是能够有效地抑制由相位不一致性区域所导致的相位误差传播，因而不需要进行相位不一致性区域的识别，且使得相位解缠能够自动完成

In order to meet the demand of precise measurement and applications, the principle of phase retardation with oblique incident angle is expounded, based on the total-reflection phase transformation theory of the phase retardation. By means of Fresnel rhomb, the variation law of the phase retardation for rhomb-type retarder with the incident angle is analyzed. The result indicates that incident angle has obvious influence over the phase retardation.The phase retardation is sensitive to the incident angle, and also has close correlation to incident position of the incident ray, which is asymmetrical to the incident position of the incident ray.

为满足精确应用和测量的需求，从相位延迟的全反射相变理论出发，阐述了斜入射相位延迟原理，以菲涅耳菱体为例，分析了菱体型相位延迟器相位延迟随其入射角变化的规律性，结果表明：当光线非严格准直时，光的入射角对相位延迟量有明显的影响，延迟量不但对入射角变化敏感，而且还与入射光线的入射方位密切相关，呈不对称形式。

Due to the fact that the intercarrier spacing in OFDM is relatively small, OFDM transceivers are somewhat more sensitive to phase noise compared to single carrier transceivers. Thus this problem must be carefully considered in designing an OFDMbased system since an accurate prediction of the tolerable phase noise can allow designer to relax system specifications. According to spectrum theorem, two components of phase noise were analyzed: common phase error and intercarrier interference. On the basis of the analysis, the performance of OFDM was given for the case where phase noise has been added to the signal, and an optimal design criterion for OFDM parameters was proposed that allows to improve the phase noise error correcting capabilities in OFDM receiver.

由于采用子载波间相互正交的结构，OFDM系统对于由本地振荡器不稳定性所导致的相位噪声影响非常敏感，针对公共相位误差CPE和载波间干扰ICI两种影响表现形式不同的干扰项，从功率谱密度函数这一独特角度分析了相位噪声对OFDM系统性能的影响，提出了旨在提高接收机抵抗相位噪声能力的OFDM系统关键参数优化与设计准则，可在对所设计OFDM系统性能加以提高的同时，有效降低对接收机前端模拟振荡器件和相位噪声抑制单元的性能指标要求，从而降低接收机硬件实现成本。

A digital phase synthesizer is composed of a continuous phase data signal source, an interpolater to generate continuous edge configuration data signals in response with each continuous phase data signal, and a phase modulator to generate ouput clock signal.

一种数字相位合成器包括一个连续相位数据信号源。一个内插器响应每个连续相位数据信号产生连续边沿配置数据信号。一个相位调制器产生具有放置在由连续边沿放置数据信号确定的时间的边沿的输出时钟信号。

The above results showed that physiological AAI pacing maintained a normal EAS and VAS, and improved or enhanced VSS; while nonphysiological VVI pacing and physiological DDD pacing induced the decrease in VSS due to an abnormal EAS and VAS. Furthermore, with increasing the pacing rate, VSS was markedly decreased.The quantitative comparison of parameters of left ventricular systolic function obtained by computerized ERNA showed that AAI pacing induced the significant increases in ventricular ejection rate and stroke volume with concomitant shortening of ejection time.

应用计算机-ERNA相位分析技术，对13例生理性AAI、13例非生理性VVI及6例生理性DDD患者，分别进行等相位电影，相位图，相位直方图和VSS参数的静动态观察和定量比较，结果显示：AAI起搏可维持正常EAS和VAS，心室相位均匀一致，并且VSS参数-相角程，半高宽和峰相位标准差均较起搏前分别降低，提示起搏后VSS有所改善或增强。

In complete Nativities the Moon returns to the sign ascending at conception, or its opposite, or to the body or aspect of some Planet with whom she was at the conception, or to her own sign, and generally the Ascendant at birth is the Moon's place at conception, or its opposite, or the place of the Lord of the New Moon foregoing the conception, yet there are sober genitures too, when the Sun comes to the place of the Ascendant or its Lord, etc.

在完整准确的出生图中，月亮会回到受孕时的上升星座、或其相对的星座、或回到受孕时与某些星体成相位的位置、或是回到同一个星座；通常来讲，出生时的上升星座，即为受孕时的月亮的位置、或是其相对的星座、或孕期前月亮定位星所处的位置。如果太阳回到上升位置或其定位星的位置，那么小孩是顺产。

In complete Nativities the Moon returns to the sign ascending at conception, or its opposite, or to the body or aspect of some Planet with whom she was at the conception, or to her own sign, and generally the Ascendant at birth is the Moon's place at conception, or its opposite, or the place of the Lord of the New Moon foregoing the conception, yet there are sober genitures too, when the Sun comes to the place of the Ascendant or its Lord, etc.

在完整准确的出生图中，月亮会回到受孕时的上升星座、或其相对的星座、或回到受孕时与某些星体成相位的位置、或是回到同一个星座；通常来讲，出生时的上升星座，即为受孕时的月亮的位置、或是其相对的星座、或孕期前月亮定位星所处的位置。如果太阳回到上升位置或其定位星的位置，那么小孩是顺产。注：这一论断可以帮助生时矫正。

In chapter 3, characteristic paraments, focusing structure were discussed, the processing of double cell for phase conjugation was analyzed. Designing criteria of double cell phase conjugation mirror was given out. All phase aberrations could be compensated by using phase conjugation theoretically, but compensation is only effective to phase aberration of uniform polarizing state, it is not effective to aberration by thermally induced depolarization an diffractive effecting by aperture.

在第三章，我们讨论了SBS介质的特性参数，相位共轭镜的聚焦结构，分析了双池相位共轭镜的相互作用过程，给出了相位共轭镜的设计原则；从理论上讲相位共轭技术可以完全补偿热畸变以及因各种光学不均匀性造成的光束畸变，但是相位共轭技术只对偏振态均匀的相位畸变造成的光束畸变起补偿作用，而对由于热致双折射效应造成的退偏以及光束通过硬边光阑时的衍射效应造成的光束畸变无能为力。

Phase noise mainly comes from laser linewidth,laser phase offset,in/quadrature phase mismatch,90° hybrid phase imbalance,fiber channel and component in optical quadrature phase shift keyed transmission system.

在光四相相移键控系统中，相位噪声主要源于激光器的线宽、激光器的相位偏移、同相支路和正交支路相位不匹配、90°混频器的相位不平衡以及光纤和器件等引起的相位变化。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。