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。
2
The real decibel attenuation of the hearing protector in the workplace is lower than the value measured in the laboratory, because the measuring conditions in the laboratory are more strict.
研究表明：护耳器现场使用实际声衰减值低于实验室值，其原因是护耳器的实验室测量条件较为严格。
3
Control design for this disturbance attenuation for two directions is suggested and verified by real experiments using a power-assisted wheelchair.