Experimental research on convergent beam of large aperture

In this thesis, we propose a new method to generate a focused hollow laser beam by using an azimuthally-distributed 2 π-phase plate and a convergent thin lens.

本文提出了采用2π位相板法产生聚焦中空光束的新方法。

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This paper presents a new linear scanning optical system, which consists of a pair of microlens arrays in the Galilean telescopic geometry and a common convergent lens.

本文介绍了一种新型的线性扫描光学系统，它由一对处于望远型结构的微透镜阵列和一个普通的会聚透镜组成。

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The design of the convergent lens and the light-out part can enhance the brightness of the illuminating direction and increase the availability ratio of light.

通过聚光透镜及其出光部的设计，可以增强照明方向的亮度，提高光利用率。

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The ED50 of the retinal injury in rabbits and monkeys were obtained when the laser beam is parallel or passing through convergent lens.

求得氩激光通过前置镜及平行光后的ED（50）值；

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There are two methods of converging calibration light, one is using convergent lens, the others self-focus lens.

根据聚光结构的不同，定标光源使用聚光镜和自聚焦镜两种方案；

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The property of the convergent sequence about even subsequence and odd subsequence is generalized.

对一个数列的奇子列和偶子列收敛且极限相等则原数列收敛的性质做了推广。

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The character of the weakly convergent sequence

序列弱收敛的特征

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The Case of Convergent Sequence in A_1 Space

收敛序列在A1空间的情形

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Convergent sequence coefficient in measure of Orlicz space

Orlicz空间中依测度收敛序列系数

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Some examples about the weakly convergent sequence coefficient in Orlicz Spaces

Orlicz空间的弱收敛序列系数的计算实例

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This method is based on the continuity of the weak convergent sequence in functional analysis.

文中大部分结果是利用补偿列紧方法，该方法主要是基于泛函关于弱收敛序列的连续性。

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Based on the measurements of the conductivity and the Cl-concentration in water samples, the standard fitting curves of instantaneous injection method of radial convergent flow was hired to obtain the dispersion parameters of unconfined aquifers in test sites.

在对水样进行电导率及Cl-浓度测试的基础上，使用径向收敛流场瞬时注入标准曲线配线法求得试验场地潜水含水层的弥散参数。

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The initially discovered RDBs include depositions at the paleo-tide convergent flow and the paleo-flood tidal jet, fringing deposition around the palco-terrance.

初步发现的快速沉积体有古汇潮点快速沉积体、古涨潮射流快速沉积体和台地周边快速沉积体。

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The results of several cases show that the main part of the pressure drop takes place in the convergent flow area and the linear flow area, and the pressure drop in the divergent flow area is very little.

结果表明：井筒附近压降主要发生在汇聚流区域和炮眼内砾石层，而环空砾石层的压降相对较小；

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The entry convergent flow pattern was observed with flow visualization technique when the resin melt flowed through a die featuring abrupt contraction in cross-section of channel and axial symmetry.

应用毛细管流变仪测量了在接近实际挤出工艺条件下低密度聚乙烯熔体的流变性质；应用流动可视化技术，观测了试样熔体流经突然收缩的轴对称口模时的入口收敛流型。

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Axial velocity of the melts in the runner was higher and the radial velocity was symmetrically distributed, which showed a typical convergent flow feature;

流道内熔体有较高的轴向速率，径向速率对称分布，其流动特征为典型的收敛流动；

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A preliminary study on the interaction of systems of various scales in the convergent flow in the heavy rain area

暴雨过程汇合流场不同尺度系统相互影响效应的初步研究

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Finite element simulation of melted polymer flow inside convergent flow slot

收敛流道内聚合物熔体流动的有限元模拟

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Being the residual island are of the convergent plate subducted to the south, the central Baiyin Minerogenetic Belt is located at the southeast edge of the north Qilian Caledonian eugeosyncline.

该成矿带位于北祁连加里东优地槽的东南缘。这里是向南俯冲敛合板块残留的岛弧。CAB插槽42和地、CAB插槽5。

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It is close to the convergent plate boundary, which is Ryukyu Trench in the north and Manila Trench in the south.

台湾以北是琉球海沟俯冲带，台湾以南为马尼拉海沟俯冲构造带。

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