To facilitate realistic testing, the heart of real is the radio frequency attenuation network, a system designed to simulate realistic field conditions for multiple radios.
为方便实际测试，REAL实验室的核心是射频衰减网络，可模拟多个无线电的真实部署。
The first stage of the European Low Frequency Array (Lofar) telescope involves 96 radio antennae being erected this week in a field at the Chilbolton Observatory near Andover, Hampshire.
Lofar望远镜的一期工程位于罕布什尔的安多佛，由96个无线电天线组成的望远镜将在本周被安装完毕。
To create plasma, they applied an oscillating (radio frequency) electric field to the gas using two disk-shaped electrodes located near the top and bottom of the chamber.
为了制造等离子体，他们还在容器上下两个表面安上了电极，加上了射频震荡电场。
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