距离

Although massive filamentary structures have been often observed at relatively small distances from us, solid proof of their existence in the more distant Universe has been lacking until now.

虽然在相对较小的距离内，我们常常观测到这类大质量丝缕结构，但在本报告之前，如此大距离上的确凿证据却一直缺乏。

This paper provides the analytic method to calculate the value of Green s functions in space domain at the zero distance by the discrete complex image theory,that is ,to express the finite progressional sum of Green.

对此，本文在讨论采用离散复镜象理论计算空间域Green函数时，提出了采用该镜象理论计算空间域Green函数零距离处奇异值的解析方法，即，采用Taylor公式展开镜象理论得到的空间域Green函数的有限级数和形式，并结合特定的分域基函数来得到零距离处Green函数奇异值的解析计算式进行计算。

This paper provides the analytic method to calculate the value of Green"s functions in space domain at the zero distance by the discrete complex image theory,that is ,to express the finite progressional sum of Green"s functions detained with DCIT into Taylor expansion and deduce the analytic expression of the singularities at the zero distance with the help of the specific subdomain base functions.

对此，本文在讨论采用离散复镜象理论计算空间域Green函数时，提出了采用该镜象理论计算空间域Green函数零距离处奇异值的解析方法，即，采用Taylor公式展开镜象理论得到的空间域Green函数的有限级数和形式，并结合特定的分域基函数来得到零距离处Green函数奇异值的解析计算式进行计算。

Selective ground protecting principle and application analysis of 6 kV high voltage using in coal mine;2. Analysis of fire hidden trouble of cross - linked polythene cable for high voltage and countermeasures

在计算导线最大风偏和安全距离情况下，35kV及以上高压架空电力线路两边导线向外侧延伸一定距离所形成的两条平行线之间的专用通道。

MAIN OUTCOME MEASURES: Spatial learning and memory, mean escape latency, times of passing through the platform point, swimming distance percentage of the first quadrant, and swimming distance percentage of the 20％ marginal area.

主要观察指标：空间学习记忆能力，平均逃避潜伏期，穿过平台次数，第一象限游泳距离百分率，20％边缘区游泳距离百分率。

It is shown that in the small distance region of the bar-LD the intensity distribution of the bar-LD is constructed by separate beam spots emitted from each emitter. As the distance of the observation point from the bar-LD increases, the beam spots of the emitters begin to overlap, and even to form a flattop distribution in a large distance region.

结果表明，在距发光面较近处，各emitter辐射的光斑呈分离状；随着距离增加，各光斑开始交叠，甚至出现平顶；当距离足够远，bar型半导体激光器的远场光斑与单个emitter的辐射光斑几乎没有差异。

Dlamp body is the floatable structure, horizontal distance ±20mm, vertical distance ±20mm.

钳体为可浮动式结构：水平浮动距离±20mm，垂直浮动距离±20mm。

Based on the theory of Computational Fluid Dynamics,seven physics models with different jet distance are established.

分析了喷射距离对射流抛光效果的影响，基于计算流体动力学进行了喷射距离的分析和优化。

The method blurs point-like targets of the nearby distance in the focal plan, while has little influence on distant point targets. So it can solve the problem that is hard for signal processing method. The parameters and simulation results are given.

该方法使近距离类点目标在像面上成模糊像，同时不影响远距离点目标的成像，从根本上解决了采用信号处理方法难以解决的虚警问题，给出了参数计算与模拟结果。

Focal length scale index line.

焦点距离35mm时は撮影距离1m以上。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐