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In this paper we will discuss the force propagation and distribution in 2D granular material systems.

本文对二维颗粒系统中的力的传递和分布作了相应的讨论和研究。

Also, the granularity of propagation should be flexible.

也就是说，传播的颗粒度要非常灵活。

Basing on the propagation characteristics of electromagnetic wave in the ground, Ground Penetrating Radar is one of high r...

探地雷达是一种利用高频电磁波在地下介质中的传播特性来探测地下目标的高分辨探测技术，目前最高分辨率可达到厘米级。

Phase velocity and group velocity are important characteristics of elastic wave propagation.

相速度、群速度是弹性波传播的重要特征。

Numerical simulation on propagation of ultra-short laser pulse in photonic crystal fibers with different group velocity dispersion parameters.

超短激光脉冲在不同色散参量光子晶体光纤中传输的数值模拟。

Breeding improved varieties of tea varieties in Anhui Province in the east field propagation model is the Ministry of Agriculture jointly built seed market, operates mainly in green tea seed and clones (1) green tea has "Gladiolus Spring" brand Xiangshan cloud sharp, middle and low gross peaksà, Gunpowder (2) clonal tea varieties cultivated in recent years, market demand for variety, but also according to customer needs an appointment breeding of all types of varieties.

安徽省东至茶树良种繁殖示范场是属农业部联建的良种场，主要经营绿色食品和无性良种茶苗（1）绿色食品茶叶有"剑兰春"牌香山云尖，中低档毛峰、炒青、珠茶（2）无性良种茶苗培育近几年市场需求的品种，也可根据客户需要预约繁育各种类型的品种。

The axial direction and radial direction spectrum is blue-shift or red-shift. On axial direction, the blue-shift or red-shift increases with the relative propagation distance, truncation parameter, refractive index constant increases and temporal coherence length decreases, and the spectral-shift gurgitation becom gragually steady. On radial direction, spectral switches appear, and the truncation parameter, spatial coherence parameter, temporal coherence length and refractive index constant also influence critical position and transition height et al.

光谱沿轴向、径向均出现蓝移或红移，随着相对传输距离、光阑截断参数、空间相干参数及折射率结构常数的增大，脉冲时间相干长度的减小，轴向光谱蓝移量或红移量逐渐增大，并且由明显地起伏逐渐趋于稳定，沿径向出现了光谱开关，光阑截断参数、脉冲时间相干长度、空间相干参数和折射率结构常数对光谱开关的数目、光谱开关的临界位置和光谱跃迁量等也产生影响。

The fast Hankel transformation algorithm is used to study the diffractive modulation property of laser beam propagation in high power laser facility.

文摘：利用快速汉克尔变换算法研究了高功率激光在自由空间传输过程中形成低频调制的规律，给出了衍射调制深度与光束宽度及传输距离等参数之间的变化关系。

Starting from the polarization matrix and propagation equation of the cross-spectral density matrix, a detailed study of the influence of hard-edge aperture on the spectral switch of polychromatic vector Gaussian-Schell model beams is performed.

从偏振矩阵和交叉谱密度传输公式出发，分析了硬边光阑对多色矢量高斯－谢尔模型光束轴上光谱开关的影响。

The dispersivity of wave propagation implies that phase velocity of a single harmonic wave is a function of the angle frequency.

本论文基于上述耦合模型，对单轴应变一维情况讨论了非线性饱和-非饱和多孔介质中波传播过程的失稳现象和逸散性。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。