查询词典 coordinate conversion

In the last new years , as the demands of wireless communication system grows rapidly , the bands of microwave frequency had been saturated with various communication applications . To achieve wider spectrum for high-speed and high-capacity transmission , bands of millimeter-wave frequency are the solution of this problem . The advantage of MMW wireless communication systems is wider bandwidth comparing with microwave communication systems . To utilize the spectrum efficiently , many methods of complexly digital modulation is proposed . The more complex modulation , the higher linearity is required , and more various phase of signals are required to accomplish process of modulation . Therefore high-linearity and quadrature-phase modulator and demodulator are the emphasis of this thesis . For high level of integration , high performance and low cost , this chip is fabricated by the complementary oxide semi-conductor 0.13um process . A compact size of direct down-conversion and direct up conversion circuits will be presented in this thesis .

近年来随著无线通讯产业的蓬勃发展，微波频带已经趋近於饱和，为了追求更宽的频谱来达到更快传输速率及高资料容量的传输，宽频的毫米波频段提供了解决此问题的途径，毫米波无线通讯系统提供了相对於微波通讯系统宽频的优点，且为了更有效的使用频谱，各种不同且复杂的数位调变方式及方法被发表出来，越复杂的调变方式其所需的线性度越高，且需要更多不同的相位讯号来完成调变的过程，因此高线性度及四相位的调变及解调器将是此篇论文的研究重点，为了达到高整合性，高效能，及低成本的电路设计，我门利用互补式金氧半导体制程来完成此电路设计，因此一小面积的直接降频(Direct down-conversion)及直接升频(direct up-conversion)电路将在文中介绍。

Adding 3. 2vol% steam in feed gas CH〓 conversion increased to 94%, the CO〓 conversion was maintained in 98%, and the less carbon was deposited, the stability might be more excellent.

添加3.2vol％的水蒸汽后，CH〓转化率提高到94％，CO〓的转化率保持98％不变，H〓/CO比约有0.06的提高，同时积碳更少，稳定性也可能更好。

The single a machine that should design to adopt serieses MCS-51s primarily conduct and actions main a measurement for, passing spreading feeling machine to the current of air measuring, its change is homologous pulse signal, this pulse signal through A/ D conversion with D/ A conversion after produce the certain electric voltage signal, will show the inceptive pulse signal a discharge for representing to come out at the same time.

而主要注重对其流量的检测并加以显示。该设计主要采用了MCS-51系列的单片机作为主要的芯片，通过传感器对燃气流量的测定，将其转变为相应的脉冲信号，这个脉冲信号经过A/D转换和D/A转化之后产生一定的电压信号，同时会将起初的脉冲信号所代表的流量显示出来。

According to the basic principle of self-balanced pile test method and the conversional simplified conversion method, the pile bearing capacity between the equivalent loaded piles and self-balanced piles were compared. The influence of negative skin friction on self-balanced pile test was studied. The conversion formulas of pile bearing capacity and settlement were derived.

根据自平衡测试法的基本原理，在传统简化转换法的基础上，通过等效受压桩和自平衡试桩上下桩段受力情况的对比分析，研究了负摩阻力对自平衡测试原理的影响，推得了桩承载力和位移的转换公式。

In this article we focus on conversion rate optimization techniques and touch on the following topics: demographics, psychographics, unique selling proposition, performance gaps, website redesign, persuasion architecture, testing and conversion paths.

在本文中，我们在转换率优化技术和触摸侧重于以下主题：人口统计学，心理学，独特的销售主张，性能差距，网站的重新设计，具说服力的架构，测试和转换路径。

Secondly , through analysing the conversion mode of agricultural scientific and technical results of U.S.A., France , Japanese , Dutch Shikoku, it draw that the commercialized operation is very important for agricultural conversion of scientific and technical results.

其次，通过对美国、法国、日本、荷兰四国的农业科技成果转化模式分析，得出进行农业科技成果转化的商业化运作是十分重要的。

Government transfer payment is an important policy instrument to coordinate regional economy. This paper measures and analyzes the convergence test of income during 1995-2004, and analyzes the relationship between transfer payment after tax-sharing system reform in 1994 and regional economic convergence through econometric analysis. It concludes that income has neither absolute convergence nor conditional convergence in the nationwide. The overall transfer payments did not meet the goal of narrowing income gap, especially in the central and western regions.

转移支付是政府协调区域经济的重要政策手段，本文测算和分析1995年－2004年省区收入的收敛检验，并运用计量方法分析了1994年分税制改革以后转移支付与地区经济收敛的关系，得出的结论是：收入的收敛模式在全国范围内没有绝对收敛，也没有条件收敛，转移支付总体上没有达到缩小地区收入差距的效果，并且突出表现在中部和西部地区。

The stream function equations are derived, based on the fluid equations of motion on a revolving S 1 stream surface in centrifugal pump impeller, for indirect boundary element method. The equations are suitable ideal and incompressible fluid flow with rotation or non rotation in absolute coordinate system.

根据离心泵叶轮S1流面的流体运动方程，推导了间接边界元法所需的流函数方程，它适用于不可压理想流体的绝对流动有旋或无旋流动。

An accurate and simple formula of the absolute angular velocity of the rotating coordinate system Including solar gravitational perturbation is derived.

所提供的相对动力学模型与J2000坐标系下的绝对动力学模型完全等价。

The estimates of the absolute position and velocity of the vehicle in Local Inertial Cartesian Coordinate System are provided by Kalman filter and the data fusion algorithm called covariance matching method.

将滤波器所估测的相对位置和相对速度的资料，再转换至区域惯性直角座标系(Local Inertial Cartesian Coordinate System，简称LICCS)，并使用卡尔曼滤波为基础的共变异匹配法资料融合技术进行资料融合，以改善定位的精度。

The receding calculations and experiment analyses in this subject are built on the blood cast of pig tongue.

本研究课题的前期工作是采用猪舌血管铸型模拟人舌而进行的数值计算与实验分析。

"Each human infection constitutes an opportunity for genetic modification of the virus through reassortment, mutation, or both...."

&每一次人类的感染都暗藏着一次基因修改的机会，无论是通过病毒的整合、突变或者兼而有之。。。。&