It was over fifty years ago, during World War II,when the United States Army first used radio signals for data transmission.
报道称,电磁监测卫星是一种侦察卫星,配备了可截获极微弱无线电信号的先进传感器。
An electromagnetic surveillance satellite is a reconnaissance satellite equipped with advancedsensors that can intercept extremely weak radio signals.
学生使用GPS技术测量并记录温度、压力和湿度水平,同时,使用短波无线电信号来跟踪气象气球。
Students used GPS technology to measure and record temperature,pressure and humidity levels while shortwave radio signals were used to track the balloon.
发射器和接收器都使用天线来发射和捕获无线电信号。
Both the transmitter and the receiver uses antennas to radiate andcapture the radio signal.
这被称为频率,其也对应于以每秒周期数传输的无线电信号。
This is known as the frequency that also corresponds to the transmission of radio signals in cycles per second.
例如,浮标被设计用来接收声纳波,处理数据,并向机载接收器发射无线电信号。
Buoys have been designed to pick up sonar waves, process the data,and shoot radio signals to airborne receivers.
事实上,这都是间接的,依据的是无线电信号波长的变化。
In fact, it's all indirect,based on changes in the wavelengths produced by radio signals.
CHIME团队希望他们的最新发现能进一步揭示宇宙中无线电信号的神秘起源。
The CHIME team hopes their latest findingswill shed more light on the mysterious origins of the radio signals that echo through our universe.
它们依靠一个由24颗卫星组成的网络,这些卫星可以不断地向地球发射无线电信号。
GPS uses a constellation of 24 satellites that continually send radio signals to the earth.
英国和俄罗斯也对采用这种依靠无线电信号的技术进行了探索。
Britain and Russia have also explored adopting versions of the technology,which works on radio signals.
英国和俄罗斯也对采用这种依靠无线电信号的技术进行了探索。
Russia and Britain are also exploring the possibility of adoptingdifferent versions of this technology that can work on radio signals.
GiPhone将使用一个“相控阵”天线,由两部分组成,一起工作,形成一束无线电信号。
The 5G iPhone will use a“phased array” antenna with twoparts that work together to form a beam of radio signal.
虽然质量高于塑料,但也存在阻碍无线电信号传输的弱点。
Although the quality is higher than that of plastics,there are also weaknesses that hinder the transmission of radio signals.
测试发现系统的无线电发射水平符合监管要求,不会受到附近无线电信号的影响。
Tests have verified that the system's radio emission level meets limit regulations anddo not interfere with radio signals of nearby equipment.
这是一个如此遥远的距离,就是从旅行者一号向地球发送无线电信号,也需要17个小时才能到达。
Since the spacecraft are so far out,it takes 17 hours for a radio signal from Voyager 1 to travel to Earth.
神秘无线电信号令天文学家困惑》。
A mysterious radio signal puzzled astronomers.
通信的覆盖范围和距离-它由无线电信号的频率决定.
The range, or distance, of the communication- determined by frequency of the radio signal.
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