中柱的

Secondly, three kinds of mathematics model of optical vortex beams were introduced here. Then the propagation dynamics of optical vortex beams through the non-axis symmetry system is studied, this chapter includes the introduction of the symmetry vortex beam and the non- symmetry vortex beam, the deduction of the Collins diffract integral formula for the non-axis symmetry system, and the transformation of the vortex beam passing through the non-axis symmetry system has been described by using the numerical simulation. Then the general calculation for the orbit momentum of vortex beams, the matrix form for the orbit momentum of vortex beams, and the photon method to describe the orbit momentum of vortex beams are also introduced here. Finally, the interference about optical vortex beams was studied.

本文对涡旋光束进行了较为全面的介绍和研究，主要内容包括：（1）光学涡旋光束的基本理论，主要是介绍了单个光学涡旋光束在柱坐标中的一些表征，涡旋光束的奇异相位和光学涡旋的相位结构；（2）光学涡旋光束的三种数学模型；（3）光学涡旋光束在非轴对称光学系统中的传播动力学，其中介绍了对称涡旋光束与非对称涡旋光束，推导了非轴对称光学系统的 Collins 衍射积分公式，并利用计算机模拟图描述了对称涡旋光束经过非轴对称光学系统后涡旋形态的改变；（4）涡旋光束轨道角动量的一般计算，涡旋光束轨道角动量的矩阵形式，光子法描述涡旋的轨道角动量；（5）涡旋光束的干涉。

A freshwater blue-green alga of the genus Nostoc, forming spherical colonies of filaments embedded in a gelatinous substance.

念珠藻属念珠藻属的淡水蓝绿藻，在凝液物质中形成有细丝围绕的一种柱状

Ordo art, as a kind of tradition of art development in western building, is one part of major forms that has great value in western art of classical building.

作为西方建筑艺术发展的一种传承，柱式艺术是西方古典建筑美学中极有价值的一个重要组成部分。

The proper orthogonal decomposition method is introduced in this paper for this problem.

介绍了本征正交分解法在这一问题中的应用，并对基于球面及柱面壳体模型风洞试验得到的风压数据进行了比较验证。

In the first part, a novel paraboloidal lensed multimode fiber has been analyzed amply in the coupling between the high power single emitter broad area diode laser and multimode fiber, which has been verified in the experiment. In the second part, the coupling between the high power single emitter broad area diode laser and cylindrical lensed multimode fiber has been discussed detailedly.

主要通过计算机仿真抛物面型光纤微透镜和柱状楔形光纤微透镜与大功率宽发射域半导体激光器的多模光纤耦合效率，并在实验中进行验证，提出了提高大功率宽发射域半导体激光器与多模光纤耦合效率的新方法。

Free amino acid in ultra-high pressure sterilization milk is measured by auto amino acid analyse apparatus adopting post-column derivation means and is contrast with original milk, pasteurism milk as well as ultra high temperature sterilized milk.

采用氨基酸自动分析仪，通过柱后衍生的方法，对超高压杀菌乳中的游离氨基酸进行测定，并且与原乳、巴氏杀菌乳、超高温瞬时杀菌乳进行比较。

Human beings will not melt into an impersonal God like a salt statue tossed into the ocean, or become new and independent divine beings in a type of polytheistic evolution.

人类不会熔入一个非人格化的神里面，像盐柱掷入大海一样，也不会在一种多神演化中成为崭新而独立的神圣存在。

The parabola method is used in the process ef one dimensionoptimum solution of the coordinate transformation method.And also,difference coefficient proportionality is made use of jud...

在坐标轮换法的单维寻优中使用抛物线法，并且利用差商值之比判定框架梁、柱目标函数曲线的单调性，提高了寻优效率。

In recent years,a new type of frame consisting of steel beam and reinforced concrete column has been proposed.

近年来，在组合结构中出现了一种新型的结构形式，即由钢筋混凝土柱和钢梁组成的框架结构。

The southern part of Jin Island was being eroded by waves which led the head land was separared from the main rock to form sea stack called "Tiu Chung Rock". As the erosion proceeds, there is a 30m high long sea arch developed called "Tiu Chung Arch".

吊钟洲南面长期受著海浪拍打侵蚀，使岬角与岩体分离形成海蚀柱名为「吊钟岩」，因海浪持续的侵蚀，岩中续渐形成一个高30米的长形海蚀拱「吊钟洞」。

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％。