你的文字概述了各种无线通讯媒介，如地面微波，通信卫星，蜂窝和PCS系统。
Your text Outlines a variety of wireless telecommunications media such as terrestrial microwave, communications satellites, cellular and PCS systems.
由于无线电是一个从事媒介比电视少，这可能是一个好主意。
Since radio is a less engaging medium than TV, this is probably a good idea.
在第一阶段，传播与媒介政策主要涉及的对象是新兴的电报、电话和无线电技术。
In Phase I, communications and media policy primarily referred to the emerging technologies of telegraph, telephony and wireless.
信息处理装置和方法，记录媒介，程序，及无线通信系统。
Information processing apparatus and method, recording medium, program, and wireless communication system.
媒介接入控制(mac)层协议是无线atm的一项关键技术。
Medium Access Control (MAC) protocol is the key technology in wireless ATM systems.
无线电广播是一种媒介。
电子信号通常沿着媒介，例如铜线或进行了空中无线电波。
Electronic signals typically travel along a medium such as copper wire or are carried over the air as radio waves.
人们逐渐意识到使用无线通信作为电力系统数据传播的媒介具有广阔的应用前景。
People gradually realize that the use of wireless communication as a medium of power system data has a promising future.
然后，这个信号就可以通过电话线或无线电波等媒介进行发送。
The signals can then be transmitted by means of media such as telephone wires or radio waves.
空气它是无线电技术传输的媒介。
And air, which is the medium for wireless communication technologies.
无线电频率资源是无线电通信的媒介与基础，也是一种特殊的自然资源。
The radio frequency is the base and medium of the radio communication, and also a special type of natural resources.
【句意】像直接邮件、无线电、电视和报纸这样的广告媒介一直被用来促进工业品的销售。
Advertising media like direct mail, radio, television and newspapers ____to increase the sales of industrial products.
【句意】像直接邮件、无线电、电视和报纸这样的广告媒介一直被用来促进工业品的销售。
Advertising media like direct mail, radio, television and newspapers ____to increase the sales of industrial products.
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