查询词典 channel beam

Park Chung-Ming Yan a total area of 2666 hectares, from Wong Yan-song scenic attractions area, syrup Water Gap Recreation Area, eight-way channel alpine botanical garden, Goesan sub-beam forest landscape area, a small gorge leisure zone.

松鸣岩公园总面积为2666公顷，由松鸣岩风景名胜古迹区、药水峡水上游乐区、八路沟高山植物园区、槐山子梁森林景观区、小峡休闲度假区组成。

Hubei Jingsheng Trading CO., Ltd, established in 2001, specialize in all kinds of steel related products, mainly including resources like slab billet, square billet, coating steel, iron ore, steel scrap , and also finished products hot-roll steel plate/coil, cold-roll steel plate/coil, medium plate, medium thick plate, thick-width steel plate, I-beam and channel steel.

公司简介：湖北景盛贸易有限公司主要从事钢材系列产品的大宗贸易交易。公司主要经营：板坯、方坯、彩板、矿石、废钢等，同时以冷热轧板、中板、工槽钢等品种为辅。

The dichroic beam-splitting mirror of cubic prism is an important element to realize multispectrum in one channel.

立方棱镜二向色分光镜是实现多光谱共光路的重要器件。

This present algorithm further distinguishes itself through sufficiently utilizes the advantage that the vector sensors provide from other beam space DOA algorithms in several regards: 1 beams are formed in the vector-field domain; 2 produce at moderate signal-to-noise ratio estimation performance comparable to the traditional scale array methods;3 these vector-field beams are formed blindly using no apriori source information and coarse estimates of the direction cosine are derived to start off MUSICs iterative search so it demand less computation; 4 deploy agilely , since the fact that the output channel is various .

本文提出了矢量传感器阵列的自适应综合校准补偿方法，还提出利用单矢量传感器速度协方差矩阵分解来求解目标源方位，使得我们不要求校准源是合作性的，也无需知道校准源的先验知识，这比起常规辅助源校准方法具备较大宽容性。随着高性能阵列处理技术及数字信号处理硬件的快速发展和矢量传感器制造工艺的不断成熟，矢量传感器将在新型水雷、低频远程智能鱼雷、声纳浮标、低频拖曳线列阵和新型舰壳声纳，灵巧传感终端，战场监视系统，反隐形雷达，通讯等军民用领域取得良好的发展应用前景。

Main major domestic steel mills of 10 #-30 # I-beam, channel 5 ##-30,-20 # 3 # angle and various models strip, annual sales of 1 million tons.

公司主营国内各大钢厂的10#—30#工字钢、5#—30#槽钢、3#—20#角钢及各种型号带钢，年销量达百万吨。

In addition, also did not check into the existence of two dual-channel mode, a variety of chassis inside the power cord, data line and connecting lines, there is no organized into a fixed beam and a good location (usually the use of plastic Lariat ), so as not to affect the internal cooling chassis.

除此之外，还要检查两条内存有没有插到双通道模式，机箱里面的各种电源线、数据线和连接线，有没有整理成束并固定好位置，以免影响机箱内部的散热。

Transport of long-pulse,high-current electron beam in performed monatomic plasma channel in the ion focus regime.

刘盛纲 分别于1955年和1958年获得东南大学和电科技大学学士和博士学位，1980年当选为中国科学院院士，1986年起担任电子科技大学校长至今，目前的研究兴趣为微波等离子体及等离子体相关电磁相干辐射。

A channel stiffener for end-plate beam-to-column connections is introduced to meet some architectural needs in this study.

本文介绍了梁柱端板连接的一种满足某种建筑要求的加劲方法，即采用槽钢代替传统的加劲方式作为加劲肋。

By time-varying filtering, we realize the signal selectivity and interference suppression, especially for the signals with time-varying power spectrum. It is shown herein that conventional eigenstructure based methods are lower dimensional special case of the time-frequency subspace fitting method. The closed-form array response estimation algorithms for blind source separation in wireless communication is also developed in the dissertation by exploiting the data structure of second-order statistics of the array output in the presence of multipath. The proposed method achieves array response estimation with little constraint on signal property and propagation environment such as scatters or angular spread. Moreover, the array utilized here can be of arbitrary geometry and even uncalibrated. Since the closed-form solution is obtained, no misconvergency may occur and large amount of computation can be saved. The equivalent feed model and corresponding optimization designation are proposed to realize the downlink multi-user selective transmission. By coherent and non-coherent superposition of the electromagnetical field, multiple beams can be formed using a single array, so that each co-channel user signal is transmitted in each beam and will not interfered with each other. The proposed system scheme implements the digital beamforming and the channel allocation in the base band, therefore is suitable for the utilization of the radio software technology. The feasibility and effectiveness of the proposed model are proved by the RF experiment.

在窄带条件下，GSC－SSF方法还可以提高阵列的虚拟孔径，从而提高估计的性能；可以证明，Cyclic DOA 和SC-SSF方法可看作该方法的特例或近似； 3、提出了二维GSC－SSF方法和宽带谱相关DOA矩阵方法，利用信号的循环平稳特性解决了宽带条件下二维 DOA 估计问题，并具有阵元数少、计算量较小的特点； 4、提出了时频子空间拟合和宽带时频DOA估计算法，将联合时频分析的理论和方法引入到阵列信号的空间谱估计研究中，利用时变滤波实现信号选择性测向和干扰抑制，特别适合于谱时变信号；可以证明传统特征结构法可看作是时频子空间拟合方法的特例； 5、提出了多用户环境下阵列响应的估计方法——CARE方法，该方法对信号结构和传播参数（主要是散射源分布与角度散布）的约束较少，适用于各种几何结构的阵列甚至未校准的阵列，能够直接得到阵列响应的闭式解，因此计算量小、稳健性好，不存在收敛问题； 6、提出了针对多用户下行选择性发送的阵列等效激励模型、优化设计方法及其系统实现方案，通过空间场的相干叠加与非相干叠加使得单一阵列能够形成多个波束，并保证各波束内的用户信号各不相同且相互干扰最小；其系统方案具有在基带实现数字波束成形、信道分配并便于软件无线电实现的特点，其有效性已得到外场实测数据的证实。

In this paper, the statistical model for co channel interference is constructed based on multi beam smart antenna, the concepts of cellular communication system, and the feature of multi beam smart antenna.

根据蜂窝概念和多波束智能天线的特点建立了基于多波束智能天线的同频干扰统计模型，在考虑瑞利-对数正态分布衰落的传播特性后，得出中断概率的表达式。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。