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通讯频率
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  communication frequency
     On the L(2,1)-labeling problem on graphs and the problem of moving communication frequency assignment
     图的L(2,1)-标号与移动通讯频率分配问题
短句来源
     The moving communication frequency assignment problem can be transformed into an L(2,1)-labeling problem on a graph.
     移动通讯频率分配问题可以转化为图的L(2,1)-标号问题。
短句来源
     The L(2, l)-labeling Problem on Graphs and the Moving Communication Frequency Assignment Problem
     图的L(2,1)标号与移动通讯频率分配问题
短句来源
     This paper firstly corrects a wrong result given by refernece [1],then gives the edge spans of L(2,1)-labeling and lambda-L(2,1)-labeling of the above two kinds of graphs,so the moving communication frequency assignment problem is completely solved.
     首先研究了参考文献[1]中的一个错误结果,并精确刻划了上述两类图的L(2,1)-标号的边跨距及λ-L(2,1)-标号的边跨距,从而全面地解决了平面格子图、三角格子图上的移动通讯频率分配问题。
短句来源
     With defer potential of harmonic fields in whole-space lossy medium, the closed expressions have been derived under quasi-static condition, which leads to analysis directivity of harmonic dipole antenna, field zones and relationships between field, earth resistivity, communication frequency and distance.
     本文利用全空间有耗媒质中谐变场的推迟位,在准静态条件下导出了电偶极子场的闭合解析公式,分析了谐变偶极子天线的方向性和场区以及无线通讯中场区与大地电阻率、通讯频率、通信距离等之间的关系。
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  “通讯频率”译为未确定词的双语例句
     This system consists of a miniature RF transceiver inside the body and a data recorder outside the body. ISM band radio frequency(approx.433MHz) is used to achieve half duplex communication between the transceiver and the data recorder.
     此系统由位于体内的微型射频收发器和体外的数据存储器组成 ,系统所用的通讯频率位于ISM波段 ,微型收发器与数据存储器之间使用半双工方式通讯 ,使用FSK调制方式实现了双向数字通讯。
短句来源
     With increasing the frequency of SAW devices,both high power durability and strong adhesion of Al films are required. Mo additive was used to improve the anti-electromigration and power durability of Al films.
     随着通讯频率的不断提高,对SAW器件用Al薄膜的功率承受力以及与基体的附着力提出了越来越高的要求。
短句来源
  相似匹配句对
     FREQUENCY
     生死频率
短句来源
     ON FREQUENCIES
     频率
短句来源
     Research Notes
     研究通讯
短句来源
     An Overview of Architecture Design of Frequency Synthesizers for Wireless Applications
     无线通讯系统频率合成器结构设计综述
短句来源
     Laser Communications
     激光通讯
短句来源
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  communication frequency
HF detecting radar and communication frequency selection system
      
Most mothers reported having communicated with their home visitor about the three risk areas, but there were no differences in communication frequency based on whether services were needed.
      
Acoustic analysis shows that the optimal communication frequency is inversely proportional to about the 0.4 power of the animal's body mass.
      
For parallel programs, communication frequency, communication bandwidth and serialization complicate the situation further.
      
In other words, the communication frequency is high amongst neighbors and high overheads are far less tolerable.
      
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Design, performances and application of the high frequency analog integrated phase-locked loop KD8041 are described in this paper. The PLL KD8041 consists of phase detector, voltage controled oscillation, low pass filter, amplifiers, vol. tage and current stabilizers, and temperature compendation network, etc. The operating frequency is 50MHz. It can be used in modern communications, frequency synthesis, automatic control and precision instrumentation, etc.

本文介绍高频模拟集成锁相环(PLL)KD8041的设计原理、性能指标及其应用。它由鉴相器、压控振荡器、低通滤波器、若干放大器、稳压稳流器及温度补偿电路所组成。其最高振荡频率为50MHz,可广泛应用于现代通讯、频率合成、自动控制及精密仪器仪表中。

The modern information society continuously demands for larger communication capacities.These demands can be met by developing higher telecommunication frequencies.With this goal and modern communication technology basing on satellite systems with reflector antennas,a new structural design concept of a satellite antenna reflector as an adaptive structural system is being developed.In this article the manufacturing of such a parabolic central focus sandwich...

The modern information society continuously demands for larger communication capacities.These demands can be met by developing higher telecommunication frequencies.With this goal and modern communication technology basing on satellite systems with reflector antennas,a new structural design concept of a satellite antenna reflector as an adaptive structural system is being developed.In this article the manufacturing of such a parabolic central focus sandwich reflector of a diameter of 900mm with intermediate modulus carbon fibre/epoxy face sheets and aluminium honeycomb core with integrated actuators will be introduced.The fabrication of the actuator packages,the filament winding process and the assembly of the actuators will be presented.With this paper the authors intend to introduce this new design concept as a promising technique to realise lightweight,by means of active control thermally highly stable and economic reflector structures for future communicaiton applications.

现代信息社会越来越需要更大的通讯能力 ,这种需要可通过发展更高的远程通讯频率来满足 ,为实现此目的 ,使用发射天线的卫星通讯系统。德国宇航研究院结构力学研究所正在研制一种新的、用于卫星天线发射器的自适应结构体系。本文介绍了一种直径为 90 0毫米的抛物面型叠层发射器的制造工艺。该卫星天线发射器叠层材料为中等弹性模量的碳纤维——环氧树脂面板和带有集成激励控制驱动器的铝蜂窝夹芯。并将给出驱动器封装的制造 ,纤维缠绕过程和驱动器的装配方法。本文介绍了这一新的设计思想和具有高效控制 ,高热稳定性及经济的、重量轻的自适应智能天线反射器结构。

An L (2,1) labeling of a graph G is a function f from the vertex set V(G) to the set of all nonnegative integers such that |f(x)-f(y)|2 if d(x,y) =1 and |f(x)-f(y)| 1 if d(x,y) =2.The moving communication frequency assignment problem can be transformed into an L(2,1) labeling problem on a graph.The 2 lattice and relative graph are extended to the n lattice and relative graph,and the L(2,1) labelings of the n lattice and relative graph are given.

图G的L(2 ,1 )标号是一个从顶点集V(G)到非负整数集的函数f(x) ,使得若d(x ,y) =1 ,则|f(x) -f(y) | 2 ;若d(x ,y) =2 ,则 |f(x) -f(y) | 1 .移动通讯频率分配问题可以转化为图的L(2 ,1 )标号问题 .将 2 格图及相关图推广到n 格图及相关图 ,并给出了它们的L(2 ,1 )标号 .

 
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