查询词典 planar

The design tool not only could provide various core specifications and its loss characteristic curves base on the core database, but also suit for PCB windings design of non-storage-energy type planar transformer with arbitrary number of winding and layer, and arbitrary connections. It is a good design tool for planar transformer with enough engineering precision, high performance and low cost.

软件不仅可以提供基于数据库的各种磁芯规格参数和各种损耗特性曲线，而且适用于分析、设计非储能式平面变压器的任意个线圈的任意连接结构和任意层数的PCB线圈，有足够高的工程精度，为设计高性能平面变压器提供了高性价比的设计工具。

These antennas can cover GSM900/DCS/PCS/UMTS operation. In the chapter 2, the antenna is designed based on the concept of monopole antenna. Furthermore, the antenna structure have two radiant paths and coupled each other at tail end to do impedance matching. In addition, to raise distance between radiation plane and ground will avoid capacitative effect effectually. In the chapter 3, the antenna is designed based on the concept of planar inverted-F antenna. Furthermore, that the antenna structure have two radiant paths and coupled each other at tail end to do impedance matching is similar to chapter 2. But there is a difference in them. We can choose the short position to change input impedance at this structure. In the chapter 4, the antenna is designed based on the concept of planar inverted-F antenna which takes coupled-fed. It will produce the first mode and high-order mode near the frequency, 900MHz. The feature of this type is to reduce the volume effectually. This antenna can not only cover GSM900/DCS/PCS/UMTS operation but maintain good radiation efficiency. Finally, we will compare three antennas, and develop procedure with industrial view, and propose the prospect of the GSM/GPRS antenna in PND, as a conclusion.

在第二章中，我们使用单极天线设计概念，使用双路径架构并於末端耦合来对天线阻抗做匹配，产生涵盖GSM900/DCS/PCS/UMTS四频操作频带，并提高与接地面的辐射高度，以避免电容效应，使天线具有良好的辐射特性；在第三章中，使用倒F形天线设计概念，使用双路径架构於末端耦合，并於辐射臂上采取适当接地点电感效应作输入阻抗匹配，达成涵盖GSM900/DCS/PCS/UMTS系统的四个操作频带；在第四章中，采用倒F形架构并使用耦合馈入方式，使得长辐射金属臂在低频900 MHz附近产生共振，产生低频基频模态及高阶模态，以达成宽频及频宽涵盖GSM900/DCS/PCS/UMTS频带操作，并有效缩减使用体积；最后，分别比较此三种架构的优缺点，再加以业界角度来思考，研发产品天线的流程及思考方向，以及天线应用於可携式导航装置中未来的展望作为本论文的总结。

The paper expounds the method of computer aided design for a conicograph acoording to the principle of the centrode for planar mechanism and the method of drawing the fixed centrode for planar mechanism with a "sliders dyad".

根据平面机构瞬心线的原理和利用加&双滑块二级组&绘制平面机构定瞬心线的方法，论述了一种圆锥曲线仪的计算机辅助设计方法，文中编制了程序设计框图，并通过实例绘制了圆锥曲线。

Our calculated results show that the relative stability of the isomers depends on the level of theory used: in the framework of DFT, Au10 trends to form planar structures, while the MP2 calculations show that the three-dimensional isomers are energetically more favorable. Based on the present results, Au10 may be conjecturably a critical species of gold clusters which bridges the planar structures and three-dimensional ones.

计算结果表明Au10团簇异构体的相对稳定性明显依赖所使用的理论方法和泛函，密度泛函结果显示Au10倾向于采用平面结构，且不同的泛函给出异构体的相对稳定性次序也不相同，而MP2计算则显示三维空间结构的Au10团簇更稳定， Au10可能是金团簇从二维结构到三维结构演化的一个临界点。

The dynamic properties of the nonlinear planar cantilever and the nonlinear nonplanar cantilever are investigated, The main contents are as follows.The equation of motion for the planar cantilever is obtained by using the theory of elastic mechanics.

本文研究了非线性平面运动悬臂梁和非线性非平面运动悬臂梁二种模型的动力学特性，主要研究内容有以下几方面。

The monoamines are almost planar; one bond angle in each diamine and triamine is planar, other bond angles remain.

激发态单胺几乎呈平面状；对于双胺和三胺，一个氮原子键角度呈直线型，其它氮原子键角度几乎没有变化。

Axial multi-planar reconstruction of the stents and curved-planar reconstruction through the stents were evaluated for image quality on a 5-point scale (1=excellent,5=uninterpretable) and lumen diameter.

采用5分制计分法评价支架的轴位多平面重建图像及通过支架内腔中心的曲面重建图像质量，同时测量支架内管腔直径。

The third chapter contains my research work, which mainly focuses on Planar Photonic Bandgap. The idea of how to miniaturize Planar Photonic Bandgap by using spiral structures is proposed. Finally, by using ununiform method, the bandwidth, which is decreased due to miniaturization, are enlarged obviously.

首先介绍了平面光子晶体在微带线结构中的几种应用；然后阐述了我们在平面光子晶体小型化设计中所做的一些工作，包括仿真方案的选择，设计方案的制定与比较，以及与传统结构的比较；最后介绍了采用渐变周期结构对小型化所带来的带宽减少问题所做的改善工作。

Automatic programming and machining simulation have designed in the CNC system. Inputting design parameters of cam mechanism through the interface of programming system in automatic programming, the special program of machining planar cam is generated automatically. Machining simulation is to simulate the machining process of grinding wheel and planar cam by using animation method, so as to verify the validity of NC code.

自动编程能够通过用户界面输入凸轮机构的设计参数，生成只适合该机床的特定数控代码；加工仿真用动画方式模拟砂轮和平面凸轮的磨削过程，用于验证数控加工程序的正确性。

In the meantime the radius of curvative of the planar cam profile should be also tested in the synthesis of the planar cam mechanism.

另外，在平面凸轮机构的综合中，一般也要验算凸轮轮廓曲线的曲率半径。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。