相位的

It is found that the resolution of high order harmonics can be seriously affected by initial phase of laser field. A rudimental explanation is given.

从而，可以通过调节适当的激光初始相位和选取适当的系统来改善高次谐波的相位匹配，产生清晰的高次谐波辐射谱。

In addition, the nonlinear processes such as cross-phase modulation, non-degenerate two-photon absorption, and stimulated Raman scattering must also be considered for double wavelengths propagating in waveguide.

在归纳分析了SOI对光信号处理的研究进展的基础上，进一步完善了超快脉冲在脊形硅波导中演变时所满足的线性和非线性传输方程，在此非线性方程中包括波导线性损耗、群速度色散和三阶色散等线性效应；同时也包含了自相位调制、简并双光子吸收、自由载流子吸收和自由载流子色散等非线性过程；当双光场在波导中传输时，脉冲之间的交叉相位调制、非简并双光子吸收和受激拉曼散射效应等非线性效应也被考虑。

Not considering subsample, these two filter banks retain more image details and better direction selectivity.

这两种全相位方向滤波器组不对图像下采样，保留了图像方向的细节信息，具有更好的方向选择性能且在恢复时，不需要重建滤波，方法简单；在对Contourlet变换的分级研究中，建立了一种全相位分级方法，由于全相位子带分解的优异性能，使得这种分级方法优于拉普拉斯金字塔分级方法。

This paper, based on the secong approach, presents a new efficient algorithm to design symmetric bi-orthogonal M-band wavelets with arbitrary regularity by using Grobner basis and syzygy module algorithm in computing algebra, which bi-orthogonalizes the polyphase matrix line by line.

本文基于第二种思路结合计算代数中Groebner基和合冲模的思想和算法提出了一种同时具有任意正则阶和线性相位性质的M带双正交小波的新型高效构造算法，其中采用多相位矩阵逐行双正交化的方法。

The high precision and fast optimiza -tion formulae for the phase center of Circular apertured horn are Presented, and the synthes is methods for the reflector antenna are discussed.

提出了园口径喇叭相位中心的快速寻求方法，并对双反射面天线的综合方法进行了研究和讨论，首次提出了反射面天线系统中馈源相位中心的广义表达式，进而提出了反射面天线系统的吻合调整与最佳匹配方法。

It is used to meet the basic conditions of optical measurements related to the detection system, through the testing phase and light pulse containing optical pulse and chirper information about the phase of interference achieved.

它是采用能够满足光学相关探测基本条件的测量系统，通过检测含有光脉冲的相位和光脉冲的相位和啁啾信息的快干涉项而实现的。

In this paper, the principle of sell-pumped conjugator has been introduced and some parameters which effect the conjugate efficiency have been discussed, the experiment scheme using self-pumped eonjugater to improve the output quality of diode laser array has been discussed.

通过介绍自泵浦相位共轭镜的工作原理，针对影响共轭效率的参数进行了讨论，列举了采用自泵浦相位共轭镜改善激光列阵光束输出质量的多种常用实验方案，并总结了这些方案的优缺点。

The positioning result of phase and broadcast ephemerides are gained using time-satellite differential model after canceling SA, the precision for 24 hours phase observation data is about 1.1 metre,the precision for 2 hours phase observation data is about 1.3 metre,the precision for 1 hour phase observation data is about 1.6 metre ,the precision for 20 minutes phase observation data is about 2.7 metre.

采用时星差模型得到取消SA后相位和广播星历的定位结果：用24小时的相位观测数据定位精度在1.1米水平；用2小时的观测数据定位精度在1.3米水平；用1小时的观测数据定位精度在1.6米水平；用20分钟的观测数据定位精度在2.7米水平。

Therefore, it is useful to make further study on heightener of reflectivity and applying in laser system with narrow pulse-width less than 30ns and high repetition rate more than 100Hz for space -communication and laser-detect.In this paper, a new theoretical model is established for optical fiber pumped by broadband laser.

而对光纤相位共轭器而言，关键问题是如何突破SBS反射率低于60％的瓶颈，并应用到重复频率大于100Hz、脉冲窄于30ns的激光系统中获得较高的稳定性和较好的相位共轭效果。

The main factors effecting on exploration precision of surface wave are analyzed in the light of calculation of phase velocity of surface wave; the merits and demetits of common computing methods for phase velocity between stations and their applied range are discussed and calculation of interstation Green's function for correcting phase is put forward to get the precise phase difference between two stations.

分析了影响面波勘探精度的主要因素，针对计算面波相速度的精度问题，讨论了常用测量台间面波相速度方法的优缺点及其适用范围，并提出通过测量台间格林函数进行相位校正，以得到两台之间的精确相位。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。