The utility model has the characteristics of light weight, small dielectric gain loss, low dielectric thermal noisetemperature, small input voltage standing wave ratio, etc.
本实用新型具有重量轻、介质增益损失小，介质热噪声温度低、输入电压驻波比小等特点。
2
After a white noise signal has been taken as the input of a standard sound source, a static acoustic test is conducted for a prototype silencer without air flow and at the normal temperature.