查询词典 wireless telegraphy

Recently, of the wireless channel transform operations, especially in the future wireless transform system such as 3G, 4G and wireless LAN with the operation of image and video, because of the wireless channel characteres such as signal fading, multi-way reflection and so on, traditional coding methods become more and more unfitting.

在近来的无线信道传输业务中，特别是在将来的3G、4G以及无线局域网等无线信道传输系统中的图像乃至视频传输业务中，由于无线信道的信号衰落、多径反射等诸多特点，使得传统的编码方法越来越难以胜任。

The main products: Internet telephony, wireless access Desk, to wireless, public wireless, wireless internet, chargers, power adapters.

主要产品：网络电话、无线接入台、无线商话，无线公话，无线上网卡，充电器，电源适配器。

The designing idea and realization method of a wireless tachometer of the engine with the wireless transmission technique were discussed.The design of the hardware and software of the wireless tachometer system was provided,based on TX100/RX100 ASK wireless receiving and transmitting radio module, real time clock chip PCF8563,AT89C2051 microcomputer and four-bit serial segmentary LCD of EDM1190A.

提出了一种应用无线传输技术的发动机无线转速表的设计思路及实现方法，给出了基于TX100/RX100ASK无线射频收发模块组、实时时钟芯片PCF8563、AT89C2051单片机和4位串行段式液晶显示器EDM1190A的无线转速表系统的硬件和软件设计。

In this dissertation, the characteristics of the OFDM wireless channel are modeled and simulated, the work as follow has been completed.(1) Based on studying the theory of the spread of wireless channel, the characteristics of wireless channel are analyzed, the models of a variety of fading channel are established, and the model of the wireless channel with tap delay line and Jakes channel model are designed.

本文主要是对OFDM系统无线信道特性进行建模与仿真，完成了以下工作：(1)在研究了无线信道传播理论基础上，分析了无线信道传播特性，建立了各种衰落信道的结构模型，设计了无线信道抽头延迟线模型和Jakes仿真模型。

This instrument combines wireless RF module with singlechip. It can realize measurement, preservation and distant wireless communication all-in-one. It not only can measure and show snap cap's resistance quantity intuitively, but also can transmit data to monitoring center's PC by wireless in time. It makes data vision and data recognition. It can deal with the resistance's data the is measured in blasting scene by wireless. It provides more safety control and convenience for the employees in scene operation.

该设备将射频无线模块与单片机系统相结合，实现了数据测试、保存、远距离传送一体化，不仅能够快速直观的测试并显示出雷管的阻值，而且能及时地将测试数据以无线的方式传送给监控中心的PC机，由PC机进行数据的显示和识别，成功地实现了爆破现场雷管电阻测试数据的无线处理，为现场作业提供了更为可靠的安全保障，并极大地便利了工作人员的现场作业。

RF modules covering GSM, CDMA, TD-SCDMA, WCDMA, WLAN and Wimax wireless communications systems, active modules include power and frequency of the linear power amplifier, transceiver components, modules and integration of selected frequency modules, Passive radio frequency modules, including various types of filters, diplexers, a road, splitters and couplers; wireless network optimization campaign整机including PHS, GSM, CDMA, TD-SCDMA and WCDMA straight-machine, RF Rafah Yuan and indoor distribution systems, digital television, including digital TV mobile wireless transceiver modules, wireless transponders, digital mobile TV repeater, and so on.

射频模块涵盖了GSM、CDMA、TD-SCDMA、WCDMA、WLAN和Wimax等无线通信系统，有源模块包括各种功率和频率的线性功率放大器、收发组件、选频模块和一体化模块等，无源射频模块包括各类滤波器、双工器、合路器、功分器和耦合器等；无线网络优化系列整机包括PHS、GSM、CDMA、TD-SCDMA和WCDMA直放机、射频拉远和室内分布系统等；数字移动电视包括数字电视无线收发模块、无线转发器、数字移动电视直放站等。

He experimented for years in his own laboratory, and while he was still a young man , he invented wireless telegraphy.

他在他自己的实验室里成年累月的作实验，之后，当他还是个年轻人的时候，他发明了无线电报。

He was celebrated for his development of wireless telegraphy.

他以提高无线电报技术闻名。

He experimented for years in his own laboratory, while he was still a young man, he invented wireless telegraphy.

他在他自己的实验室里成年累月的作实验，之后，当他还是个年轻人的时候，他发明了无线电报。

Wireless telegraphy, the phonograph and the radio are based on this law

无线线、电话及收音机的发明都归功于这一法则

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？