由于月球阻碍了与探测器的直接无线电通信，中国首先必须把一颗人造卫星送入月球轨道上的一个点，人造卫星可以从那里向航天器和地球发射信号。
Because the moon's body blocks direct radio communication with a probe, China first had to put a satellite in orbit above the moon in a spot where it could send signals to the spacecraft and to Earth.
然而，这种纯粹的视觉系统在恶劣天气下毫无用处，到了20世纪30年代，无线电通信开始用于空中交通管制。
However, this purely visual system was useless in bad weather, and, by the 1930s, radio communication was coming into use for ATC.
附件有钢盔灯和无线电通信器。
他们接受了无线电通信、拆毁和破坏的课程。
They underwent courses in radio communication, demolition, and sabotage.
随着航天飞机减慢速度，无线电通信又重新恢复。
它还具有数字联网功能，为更远距离的多个机器人中继无线电通信。
It also has digital mesh networking capabilities, allowing multiple robots to relay radio communications over greater distances.
在超宽带无线电通信中，跳时技术起着至关重要的作用。
In the UWB wireless communication system, time-hopping technique plays a key role.
既影响江岸电台的正常工作，又扰乱无线电通信管理秩序。
It had effect on both the normal work of the stations along the river bank, and disturbing the order of communication.
它广泛适用于电子战系统、雷达信标、无线电通信以及监测等领域。
It is widely used in the electronic warfare system, radar beacon radio communication and monitor system etc.
文章将这种方法用于无线电通信信号的分类与识别，取得良好的效果。
This method is applied to classify and identify the radio communication signals and has acquired good results.
频谱感知能力是认知无线电通信的一个重要前提，也是其核心功能之一。
The thesis mainly focuses on spectrum sensing and dynamic spectrum access of cognitive radio system.
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.
1906年，在柏林举行的国际无线电通信大会上采用了SOS遇难信号。
In 1906, the "SOS" distress signal was adopted at the International Radio Telegraphic Convention in Berlin.
磁暴还会对高层大气存在加热作用，改变其密度计组成，中断无线电通信与GPS装置。
Magnetic storms also heat the upper atmosphere, changing its density and composition and disrupting radio communications and GPS units.
我问他们怎么知道我碰到麻烦了，他们说当我进了那栋楼之后，我的无线电通信就断了。
When I asked them how they knew I was in trouble, they said that when I had gone into the building, all radio contact with me had been lost.
磁浮列车车地无线电通信系统则是列车与地面控制中心进行信息交换的通道。
The train-ground radio communication system of Maglev trains is the information exchange channel for trains and the ground control center.
认知无线电(CR)是一种智能的无线电通信系统，其智能主要来自于认知引擎。
Cognitive Radio (CR) is an intelligent wireless communication system, whose intelligence mostly comes from the cognitive engine.
成立3gpp2是为了将北美和亚洲移动无线电通信跨系统操作过渡到第三代系统。
3gpp2 was born to evolve North American and Asian Cellular Radio-telecommunication Intersystem Operations into a third-generation system.
JN1105A是一种机动通信干扰系统，设计去定位和阻塞敌人战术无线电通信。
The JN1105A is a mobile communication countermeasures system designed to locate and jam enemy tactical radio communication signals.
机载设备包括无线电通信和导航用于学员飞行员获得航空管制和导航仪表的基本技能。
Onboard equipments include radio communications and navigation for the pupil pilot to gain the basic skills of flight control and navigation instruments.
目前，软件无线电技术已成为无线电通信领域，特别是军用无线电通信领域的技术热点。
Nowadays, the software radio has become a technique hot spot in the radio com-munication field, especially in the military radio communication field.
按照数字化战场的决策，无线电通信设备、夜视护目镜以及其他电子设备是士兵的背包中必须的物品。
Following the decision to digitize the battlefield, radio communication equipment, night-vision goggles, and other electronic equipment become essential items in a foot soldier's backpack.
为了实现对空间无线电通信信号的接收处理，开发研制了通信信号接收与数据采集系统。
Communication signal receiving and data acquisition system is developed for the processing of radio signal.
该设备能在单一系统同时探测、监控和记录视频基带、无线电通信、卫星通信以及雷达信号。
It enables a combination of video baseband, radio communicatons, satellite communications, and radar signals to be detected, monitored, and recorded simultaneously on a single system.
此外，由太阳活动引起的“地磁风暴”，确实可以破坏一些无线电通信，危害卫星，甚至瘫痪电力系统。
Additionally, it's also true that geomagnetic "storms" caused by solar activity can disrupt some radio communications, endanger satellites and even knock out power systems.
任何个人按钮，感应器或报警装置通过无线电通信信号基本单元，因此不要需要用电线连接。
Any personal buttons, sensors or alerting devices communicate with the base unit via radio signals and thus dont need to be connected with wires.
MW- 1500是用于无线电通信视线(LOS)信息传送的一种数字式微波通信系统。
The MW-1500 is a digital microwave communication system for radio line of sight (LOS) information transmission.
海上导航和无线电通信设备及系统。数字接口。第2部分：高速传送的单个通话器和多个受话器。
Maritime navigation and radiocommunication equipment and systems - digital interfaces - part 2: single talker and multiple listeners, high - speed transmission.
海上导航和无线电通信设备及系统。数字接口。第2部分：高速传送的单个通话器和多个受话器。
Maritime navigation and radiocommunication equipment and systems - digital interfaces - part 2: single talker and multiple listeners, high - speed transmission.
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