查询词典 block antenna

According to Lagrange equation in analytic dynamics, the dynamic equations of the Double-Axis Gyro Stabilized Platform of a certain airborne SAR antenna are derived, its linear model and the transfer functions of other main parts in the DAGSP are given and at last the block diagram of DAGSP is given.

6利用分析力学原理，推导了某机载天线双轴陀螺稳定平台的动力学方程和线性化模型；给出了天线双轴陀螺稳定平台中各主要环节的传递函数及数学模型。

An unconstrained cost function is provided for the Orthogonal Space-Time Block Coded Multi-input-Multi-Output Antenna System. The global minima of the cost function are analyzed: in fact the global minima of the cost function is the normalized channel vector.

该方法主要利用了正交特性，给出了一个针对正交空时分组码MIMO系统模型的无约束代价函数，并分析了该函数的全局最小值：该无约束代价函数的最小值实际上就是实际信道的归一化矢量。

Three isomorphic pendant derivatives based on monovacant Keggin heteropolytungstate [SiW11O39]8- as building block have been synthesized through the decoration of Co-Im complexes using bench method:5Na_4H_2[SiW_(11)O_(39)CoIm]_(0.63)[SiW_(11)O_(39)Co(H_2O)]_(0.37)·7H_2O (1)_6[SiW_(11)O_(39)NiIm]_(0.8)[SiW_(11)O_(39)Ni(H_2O)]_(0.2)·7H_2O (2)_4Na_6[SiW_(11)O_(39)MnIm]_(0.69)[SiW_(11)O_(39)Mn(H_2O)]_(0.31)·7.5H_2O (3) Complexes 1–3 are the first examples of crystallographically characterized 3d-transition metal mono-substituted POMs with an antenna organic ligand synthesized under normal bench conditions.

以单缺位Keggin型杂多钨硅酸盐[SiW11O39]8-为建筑单元，在水溶液中通过过渡金属-咪唑配合物的修饰，成功地获得了三个同构的悬臂式衍生物：5Na_4H_2[SiW_(11)O_(39)CoIm]_(0.63)[SiW_(11)O_(39)Co(H_2O)]_(0.37)·7H_2O (1)_6[SiW_(11)O_(39)NiIm]_(0.8)[SiW_(11)O_(39)Ni(H_2O)]_(0.2)·7H_2O (2)_4Na_6[SiW_(11)O_(39)MnIm]_(0.69)[SiW_(11)O_(39)Mn(H_2O)]_(0.31)·7.5H_2O (3)它们是第一例在常规水溶液条件下合成得到的X-射线表征的3d-过渡金属取代的悬臂式多酸衍生物。

In chapter one, the function and components of RF block in smart antenna are discussed, and the block schematic of RF circuit in smart antenna system at 3.95GHz and 1.9GHz is analyzed.

首先介绍了智能天线研究背景、发展历史，以及射频前端在智能天线中的作用和组成。

The company was established in 1988, is one to the development, production, sales as one of the car manufacturer supplies, mainly perfumes, Qingyu block, tissue boxes, spare tire cover, steering wheel, automatic antenna, and other products, including by 40 exported to the rest of the world, 40 percent of domestic sales, with 20 percent supporting the domestic automobile manufacturers, factories have two complete production lines and more high-tech machinery and equipment imported for the production of 1,000 million Dian, The Company in the "credibility of the first" principle to meet each and every old and new friends, we Wang Qi people with full enthusiasm and the quality of service, and we wish for a better future!

本公司成立于1988年，是一家以研发、生产、销售为一体的汽车用品生产厂家，主要有香水、晴雨挡、纸巾盒、备胎罩、方向盘、自动天线等系列产品，其中有百分之四十远销世界各地，百分之四十内销，百分之二十与国内汽车生产厂家配套，工厂拥有两条完整生产线和多台进口高科技机器设备，可供年生产傎上千万元，本公司本着&信誉第一&的原则来迎接每一位新老朋友，我们宏骐人以饱满的热情和优质的服务，愿和大家共创美好未来！

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。